ZPhysicsMy Physics Tutoring: zphysicslessons.net/physics-tutoring Join my Free Mailing List: zphysicslessons.net/about Tom's Channel: youtube.com/@TomRocksMaths 2019 Maths Paper: maths.ox.ac.uk/system/files/attachments/test19.pdf Solutions: maths.ox.ac.uk/system/files/attachments/websolutions19.pdf Join Tom Rocks Maths Oxford University Mathematician and myself attempt the MAT Entrance Exam for Mathematics at the University of Oxford. This exam is great help for students preparing for mathematics exams such as the MAT, PAT, ESAT, STEP. It can also be fun for Physics and Maths Olympiad Students, JEE Advanced Students and the questions can be used as an extension and challenge for A Level Maths and Physics students. Please note that these are not official solutions, I have attached the mark scheme from Oxford, check it out.
Oxford University Mathematician TORTURES Physicist with MAT Entrance ExamZPhysics2024-08-08 | My Physics Tutoring: zphysicslessons.net/physics-tutoring Join my Free Mailing List: zphysicslessons.net/about Tom's Channel: youtube.com/@TomRocksMaths 2019 Maths Paper: maths.ox.ac.uk/system/files/attachments/test19.pdf Solutions: maths.ox.ac.uk/system/files/attachments/websolutions19.pdf Join Tom Rocks Maths Oxford University Mathematician and myself attempt the MAT Entrance Exam for Mathematics at the University of Oxford. This exam is great help for students preparing for mathematics exams such as the MAT, PAT, ESAT, STEP. It can also be fun for Physics and Maths Olympiad Students, JEE Advanced Students and the questions can be used as an extension and challenge for A Level Maths and Physics students. Please note that these are not official solutions, I have attached the mark scheme from Oxford, check it out.How Id Prepare for the PAT and ESAT - MathematicsZPhysics2024-10-10 | Join My Last Minute Pat and ESAT sessions: zphysicslessons.net/physics-tutoring Here are some problem solution on the Mathematics portion of the PAT entrance exam for Oxford and the ESAT for Cambridge, Imperial and Others Please note these are not official solutions and very often you may find more efficient methods or mistakes, I am not affiliated with either university.
I hope this video is helpful: 00:00 PAT - derivatives 01:40 PAT - integration 05:36 PAT - sequences 08:53 PAT - exponential equations 11:07 PAT - derivatives 12:05 PAT - trigonometry 13:03 PAT - even and odd functions 16:32 ESAT - scale factors 19:38 ESAT - integration for even functions trick 22:10 ESAT - rearranging 24:55 ESAT - geometry 27:25 ESAT - rationalising roots 29:34 ESAT - discriminantsYou NEED to Solve These For A Level PhysicsZPhysics2024-10-06 | Join My Physics Session: zphysicslessons.net/live-session-multi-step-calculation-in-a-level-physics
Here is a problem on multi step calculations which is a crucial part of solving problems in A Level Physics. This is of course applicable to all exam boards including AQA A level Physics, OCR A and B, Edexcel, CIE and similar courses such as AP Physics, IB Physics etc.
A similar problem has appeared in AQA however even trickier as it used Young's modulus.
The problem uses the principle of moments and springs and materials. I hope it is useful to practice multi step calculations.
Here are the most common A Level Physics Mistakes. They are applicable for all exam boards including AQA Physics, OCR A Level Physics A and B, Edexcel, CIE, Edexcel International, Oxford AQA and others.
Chapters: 00:00 Multi-step calculations 01:01 Practical Questions 01:50 Disorganised Calculations - Important! 02:35 Not reading the question 03:00 Answering everything the question asked for 03:12 Definitions 03:32 Independent Work 04:14 Not asking for help 04:43 Do not write this 05:08 Carrying through gaps in knowledge 05:37 Logarithms 05:59 Surprising Gradient Mistakes 06:26 Describe and Explain Questions 07:00 Precise Scientific Language 07:11 Keep Interest in Physics 07:44 Formula Booklet 08:02 Multiple Choice Fix 08:38 Command Words 09:36 Calculation and Algebra Mistakes 09:51 Do this after each calculation 10:04 Rounding Mistakes 10:15 Physics in unfamiliar situations 10:48 Timing Past Papers
Here are some tips on how to prepare for the ESAT for admissions to Cambridge university in 2024. It is also used for admissions to Imperial College. Please note that in this video I have solved multiple questions from the previous exam ENGAA and these are not official solutions and I am not affiliated with Cambridge University. You can access all papers here: undergraduate.study.cam.ac.uk/publications/engineering-admissions-assessment-papers There are very likely to be more efficient and different ways of solving a problem, please get in touch if you spot one.
Chapters: 00:00 The syllabus and Resources 01:52 Force Problem - Tricky 05:17 SUVAT 06:50 Resistors Hard Problem 12:03 Power and Efficiency Graph 15:47 Energy as an Integral - Electricity 18:06 Work Done as Integral - Materials 21:56 Work Done under a constant force 23:34 Speed of a particle under a wave 25:54 Path Difference and Phase Difference 29:49 Longitudinal Wave Displacement Time Graph 34:13 Longitudinal Wave Problem 36:37 Stationary Waves in Pipes 38:11 Thermal Conductivity 40:36 Specific Heat Capacity 43:11 Pressure and pV=nRT, ideal gas law 47:12 Transformers - voltage and currentHow Id Prepare for Oxford Physics - The PATZPhysics2024-07-07 | Join My PAT Preparation classes: zphysicslessons.net/oxford-pat-all-3-sessions My Physics Tutoring: zphysicslessons.net/physics-tutoring My Free Physics Newsletter: zphysicslessons.net/about
Please note that the solutions in this video are not official and are merely designed to help students prepare. There are likely more efficient methods and please let me know if you spot something. These questions are also useful as extension questions for A Level Physics and potentially also useful for preparation for Physics Olympiads, JEE and JEE Advanced Prep, Cambridge Entrance Exams (ESAT, ENGAA, NSAA etc).
Chapters: 00:00 The Syllabus 00:23 Useful Websites 00:41 Preparation Tips 02:25 Dimensional Analysis 06:07 Travelling Wave Equation 09:52 Electricity and Work Done 11:38 Adding Capacitors 15:08 Resistors and Brightness 20:39 Hard Electric Circuit 31:55 Kirchoff's 2nd Law Trick 38:28 Circular Motion Equations 40:23 Circular Motion Question - Integration 51:46 Gravitational Force and Acceleration 52:22 g as a function of density and radius 56:51 g height dependence Moon vs Earth 58:37 g as a function of distance 01:01:18 Gravitational Force in orbit 01:05:15 Double Star Orbit 01:06:13 Triple Star - Tricky Gravity/Circular Motion 01:15:08 Total Energy of a Satellite 01:24:56 Coloumb's Law Tricky Problem 01:40:18 Bohr Model of the Atom and Circular Motion 01:50:13 Calculating Energy LevelsLAST Minute Paper 3 A Level Physics TipsZPhysics2024-06-16 | Get Paper 3 confident: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join zphysicslessons.net/my-workbooks Here are some techniques for problem solving techniques in Physics Exams for A Level Physics and similar courses such as AP Physics, IB Physics and similar. This is advice on how to solve problems and improve and applicable for all exam boards such as AQA A Level Physics, OCR A Level Physics A and B, Edexcel, CIE, Edexcel International and many others. It can be useful for all papers in A Level Physics including Paper 1, Paper 2 and Paper 3. I hope this advice is useful.The Physics of Cooking For A Level PhysicsZPhysics2024-06-16 | Get Paper 3 ready: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join All of A Level Physics: youtube.com/playlist?list=PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=fFn6A-f9x3Vz_3Gw Here is a question for A Level Physics that can be very useful for Paper 3 - a 6 marker practical experimental question on the physics of ovens and thermal physics. Please note that this is not an official solution and you can find the question here: ocr.org.uk/Images/667297-question-paper-unified-physics.pdf And the mark scheme: ocr.org.uk/Images/667302-mark-scheme-unified-physics.pdf
Thermal Physics has appeared in all exam boards and can be applied to AQA Physics, OCR A and OCR B, Edexcel, Eduqas WJEC, CIE etc.Important Equation for Practicals in A Level Physics Paper 3ZPhysics2024-06-16 | Get Paper 3 ready: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join All of A Level Physics: youtube.com/playlist?list=PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=fFn6A-f9x3Vz_3Gw Here is a question for A Level Physics that can be very useful for Paper 3 - a 6 marker practical experimental question often use exponential equations and then apply the laws of logarithms. This type of analysis appears in all exam boards but including AQA Physics, OCR A and OCR B, Edexcel, Eduqas WJEC, CIE etc.What Id focus on for A Level Physics Paper 3ZPhysics2024-06-09 | My Physics Sessions: zphysicslessons.net/physics-tutoring More Practical Help: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join AQA Paper 3 Options: youtube.com/playlist?list=PLSygKZqfTjPB7h0saqGd1tJvDw6_r5BHb&si=2xGJf2fPZullQGoC My Uncertainty Workbook: zphysicslessons.net/my-workbooks All of A Level Physics: youtube.com/playlist?list=PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=fFn6A-f9x3Vz_3Gw Here are some tips on how to prepare for Paper 3 in A Level Physics. This is applicable to all exam boards including AQA Physics, OCR A and OCR B, Edexcel, Eduqas WJEC, CIE etc. It involves looking at how to solve, practical skills, uncertainties, line of worst fit and many other tips to help how to prepare for A Level Physics.How Id Answer Show A Level Physics QuestionsZPhysics2024-06-05 | My Physics Sessions: zphysicslessons.net/physics-tutoring Get Paper 3 ready: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join All of A Level Physics: youtube.com/playlist?list=PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=fFn6A-f9x3Vz_3Gw Here is a question for A Level Physics that can be very useful for Paper 2 and that is - show questions. To demonstrate A Level Physics question problem solving we look at the case of showing that the density of a nucleus is independent of its radius. We do this with the formula for the nuclear radius and highlight how to answer problems such as these. This type of problem has appeared in all exam boards and can be applied to AQA Physics, OCR A and OCR B, Edexcel, Eduqas WJEC, CIE etc. It uses Colombo's Law in Electric Fields.LAST Minute Multiple Choice for A Level PhysicsZPhysics2024-06-05 | My Physics Sessions: zphysicslessons.net/physics-tutoring Get more experiments practice: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join Please note that these are all not official solutions and it's important to have your own copy of each paper. Due to copyright restrictions I cannot show you the AQA paper, and please note that these are not official solutions and I am not affiliated with any of the exam boards. These are my own solutions and there may be mistakes. Papers: OCR: ocr.org.uk/Images/171728-unit-h556-02-exploring-physics-sample-assessment-materials.pdf AQA: filestore.aqa.org.uk/resources/physics/AQA-74082-SQP.PDF Edexcel: qualifications.pearson.com/content/dam/pdf/A%20Level/Physics/2015/Specification%20and%20sample%20assessments/A-level-Physics-2015-SAMs.pdf (go to page 60 for paper 2) This video covers multiple choice questions from OCR A Level Physics, AQA and Edexcel A Level Physics. Chapters: 00:00 OCR Q1 Percentage Uncertainty 01:47 OCR Q2 Conductors 02:35 OCR Q3 Internal Resistance 03:21 OCR Q4 Photons 04:11 OCR Q5 Electron Diffraction 05:12 OCR Q6 Number of Photon and Power 06:51 OCR Q7 Internal Resistance Charging 08:05 OCR Q8 Electric Potential 11:16 OCR Q9 Induced EMF 12:24 OCR Q10 Binding Energy Graph 13:22 OCR Q11 X-Rays 14:45 OCR Q12 Nuclear Fission 16:41 OCR Q13 X Ray wavelength 18:40 OCR Q14 Beta Decay and Particle Physics 19:44 OCR Q15 F=BIL 20:54 AQA Q7 Units 23:37 AQA Q8 Gravitational Acceleration 24:47 AQA Q9 Gravitational Potential 27:45 AQA Q10 Newton's Law of Gravitational Attraction 28:20 AQA Q11 Field Lines and Electrical Potential Energy 31:09 AQA Q12 Electric Field Acceleration 31:45 AQA Q13 Alpha Particle Deflection 32:46 AQA Q14 Electric Potential 35:04 AQA Q15 Coloumb's Law 37:02 AQA Q16 Capacitors 37:29 AQA Q17 Capacitor Discharge and Time Constant 39:16 AQA Q18 Magnetic Field and F=BIL 40:28 AQA Q19 Charge Particle in a Magnetic Field Radius 41:31 AQA Q20 Induced EMF in a moving wire 44:44 AQA Q21 Frequency in Simple Harmonic Motion 45:01 AQA Q22 Induced EMF from Graph of Magnetic Flux 45:52 AQA Q23 Specific Heat Capacity 46:03 AQA Q24 Ratio of Specific Heat Capacity/Specific Latent Heat 49:54 AQA Q26 Boyle's Law 51:38 AQA Q27 Alpha and Beta Decay 52:20 AQA Q28 Decay Constant 53:00 AQA Q29 Radius of Nucleus, Ratio 53:40 AQA Q30 Half Life 54:19 AQA Q31 Binding Energy from a graph 56:19 Edexcel Q1 - Diverging Lens 56:52 Edexcel Q2 - sound refracting 57:12 Edexcel Q3 - standard candles 57:37 Edexcel Q4 - simple harmonic motion graph 58:28 Edexcel Q5 - stress and strain 59:06 Edexcel Q6 - Hertzsprung Russel Diagram 59:49 Edexcel Q7 - Orbital Motion and Work Done 01:00:25 Edexcel Q8 - Drag 01:00:58 Edexcel Q9 - Magnification 01:02:05 Edexcel Q10 - Gravity Law GraphDo you understand this A Level Physics problem?ZPhysics2024-06-05 | Join My Last Minute Physics Sessions: zphysicslessons.net/physics-tutoring Get More videos on Practicals: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join Here is a video on the topic of what happens to the electrical potential energy. The electric potential/energy is a tricky concept in A Level Physics which is a very common mistake. This video is applicable to all exam boards including AQA A Level Physics, OCR A Level Physics, Eduqas, CIE and similar courses such as AP Physics and IB Physics. This is an excellent physics revision topic and I hope this is useful.You NEED to focus on this for calculations in A Level PhysicsZPhysics2024-06-02 | My Electric Fields Workbook: zphysicslessons.net/electric-fields-workbook My Physics Sessions: zphysicslessons.net/physics-tutoring Get Paper 3 ready: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join All of A Level Physics: youtube.com/playlist?list=PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=fFn6A-f9x3Vz_3Gw Here is a question on A Level Physics that has to be solved by resolving forces to vectors. It is a common mistake in A Level Physics and hopefully helps people on how to solve vector problems. This type of problem has appeared in all exam boards and can be applied to AQA Physics, OCR A and OCR B, Edexcel, Eduqas WJEC, CIE etc. It uses Colombo's Law in Electric Fields.How Id Avoid Mistakes in A Level Physics ExamsZPhysics2024-05-23 | LAST Minute Sessions: zphysicslessons.net/physics-tutoring Get Paper 3 confident: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join zphysicslessons.net/my-workbooks Here are some techniques for problem solving techniques in Physics Exams for A Level Physics and similar courses such as AP Physics, IB Physics and similar. This is advice on how to solve problems and improve and applicable for all exam boards such as AQA A Level Physics, OCR A Level Physics A and B, Edexcel, CIE, Edexcel International and many others. It can be useful for all papers in A Level Physics including Paper 1, Paper 2 and Paper 3. I hope this advice is useful.LAST Minute Multiple Choice Practice A Level PhysicsZPhysics2024-05-23 | Last Minute Sessions: zphysicslessons.net/physics-tutoring To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join Here are my solutions to the sample assessment paper from OCR A Level Physics. Please note that these are not official solutions and I may have made a mistake at some point. You can find the original paper here at the OCR's website: ocr.org.uk/Images/171727-unit-h556-01-modelling-physics-sample-assessment-materials.pdf These questions are applicable to all exam boards including OCR A, AQA, Edexcel and international qualification such as CIE, Edexcel International etc.
Chapters: 00:00 Question 1 00:46 Question 2 02:32 Question 3 05:02 Question 4 06:33 Question 5 07:48 Question 6 10:32 Question 7 12:46 Question 8 13:37 Question 9 14:03 Question 10 15:08 Question 11 15:38 Question 12 16:16 Question 13 17:35 Question 14 20:14 Question 15IMPORTANT Question For A Level PhysicsZPhysics2024-05-23 | LAST Minute Sessions: https://zphysicslessons.net/physics-t... Get Paper 3 confident: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join My Workbooks: zphysicslessons.net/my-workbooks My Free Physics Newsletter: zphysicslessons.net/about Here are some techniques for problem solving techniques in Physics Exams for A Level Physics and similar courses such as AP Physics, IB Physics and similar. This is advice for describe and explain question and the advice is to follow the physics and visualise it. I have used a variation of this OCR exam question here: ocr.org.uk/Images/493507-question-paper-unit-g481-01-mechanics.pdf. (question 4b is similar to the one discussed) Please note this is not an official solution. This is advice on how to solve problems and improve and applicable for all exam boards such as AQA A Level Physics, OCR A Level Physics A and B, Edexcel, CIE, Edexcel International and many others. It can be useful for all papers in A Level Physics including Paper 1, Paper 2 and Paper 3. I hope this advice is useful.How Id Answer Wordy Questions in A Level PhysicsZPhysics2024-05-22 | LAST Minute A Level Physics Sessions: zphysicslessons.net/physics-tutoring My Physics Workbooks: zphysicslessons.net/my-workbooks Get confident with practical questions: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join My Free Physics Newsletter: zphysicslessons.net/about
Describe and explain questions are part of A Level Physics and this video I give several problem solving tips on this precise questions. The following questions are applicable for all exam boards including AQA A level Physics, OCR A and OCR B A level Physics, Edexcel A Level Physics, Eduqas etc. They are also applicable to 6 mark questions.
Here is a tricky concept for revision in A Level Physics - longitudinal waves. Compressions and rarefactions on a displacement-distance graph can be tricky to identify. This video teaches you how to find them in a displacement - distance graph.
The direction of motion of a wave allows you to find compressions and rarefactions.
This video is suitable for AQA Physics, OCR Physics A and B, Edexcel, CIE and similar courses such as AP Physics and IB Physics and also for AS Physics for all exam boards.
Very useful for all 3 papers including Paper 1, Paper 2 and Paper 3.You NEED to Know These for A Level PhysicsZPhysics2024-05-12 | My LAST Minute A level Physics Sessions: zphysicslessons.net/physics-tutoring zphysicslessons.net/my-workbooks Get Paper 3 Confident: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join Phet Animation: https://phet.colorado.edu/en/simulations/projectile-motion Here are some tips and tricks for A level Physics for all exam boards including AQA A level Physics, CIE Cambridge 9702 syllabus, OCR Physics A, OCR Physics B, Edexcel A Level Physics and for similar courses such as IB Physics, AP Physics etc. Please note that is not a whole course recap and I have not managed to put all my tips into a single video.
Chapters: 00:00 Describe and Explain Motion 00:56 Projectile Motion Describe and Explain 01:41 Maximum Height of a projetile 02:27 Archimedes Principle 03:47 Velocity at impact 04:07 Springs in series and parallel 04:43 Area under force extension and stress strain graphs 05:38 Stress and Strain Graphs 07:14 Impulse and Force - Time Graphs 08:20 Elastic Collision and change of momentum 09:30 Potential Difference Equation 09:51 EMF and Potential Difference Definitions 10:32 Potential Dividers Describe and Explain 12:22 Internal Resistance Tips 14:30 Superposition Definition 15:37 Critical Angle Derivation special case 17:17 Photoelectric Effect 19:10 De Broglie Wavelength 19:58 Thermal - number of particles 20:20 Assumptions of the Kinetic Theory model 20:31 Internal Energy Definition 20:58 Absolute Zero Definition 21:29 Motion in a circle 22:08 Conditions for Simple Harmonic Motion 22:37 SHM Displacements Equations 23:17 Natural Frequency and Resonance 24:22 Gravitational Field Strength Definition 24:34 Newton's Universal Law of Gravitation Statement 24:59 Total Energy of a satellite, escape velocity 26:09 Wien's Law and proportionality 27:45 Capacitors and voltage 28:13 Capacitors in series and parallel 28:26 Time Constant for Capacitors 29:40 Discharge Equation Half Life 30:34 Defining Units- the Farad vs quantities - Capacitance 31:06 Charging of Capacitors 32:19 Binding Energy Definition 32:32 Binding Energy per Nucleon Curve 33:05 Radioactivity - spontaneous and random 33:37 Equations of Radioactivity 34:06 Decay constant definitions 34:23 Half Life Derivation 34:52 Half Life from GraphsHow Id Revise A Level Physics In a Few WeeksZPhysics2024-05-05 | LAST MINUTE Revision Sessions: zphysicslessons.net/physics-tutoring My Physics Workbooks: zphysicslessons.net/my-workbooks Whole of A Level Physics: youtube.com/playlist?list=PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=vktiTrKtgzgxdQ64 My Free Physics Newsletter: zphysicslessons.net/about
Here are some revision techniques for A Level Physics that are also applicable to all exam boards including OCR A Level Physics, CIE Cambridge 9702, AQA A Level Physics, Edexcel Physics and similar courses such as AP Physics, IB Physics etc.
Here are some tips on A Level Physics that always score marks. These are true for every exam board including AQA A Level Physics, OCR A Level Physics A and B, CIE Physics 9702 syllabus, Edexcel, edexcel international A level etc. Also they are applicable to similar courses such as AP Physics, IB Physics and similar. Some of the tips cover electromagnetism in A Level Physics, Moments and Circular Motion. I hope this video is useful!MANY Students Get This Physics Question WrongZPhysics2024-04-24 | My Physics Tutoring: zphysicslessons.net/physics-tutoring My Physics Workbooks: zphysicslessons.net/my-workbooks Get Paper 3 Confident: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join Here is an A Level physics style question on Kirchhoff's 2nd law in which we find the potential difference, voltage, between two parallel branches. In this question we apply a voltmeter as a bridge between the branches and use the laws of circuits to find the reading of the volt meter. Similar questions appear often in AQA A Level Physics, but also applicable to all exam boards including OCR, CIE, Edexcel and similar courses such as IB, AP Physics and many others. I hope this question is useful!You MUST Understand This A Level Physics QuestionZPhysics2024-04-14 | Last Minute Sessions for each Paper: zphysicslessons.net/physics-tutoring My Physics Workbooks: zphysicslessons.net/my-workbooks Get Paper 3 confident: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join My Free Physics Newsletter: zphysicslessons.net/about Here is a an extremely common mistake in A Level Physics. The mistake is on the application of internal resistance to a circuit with an LDR and is a portion of the circuits component in A Level Physics. This is applicable to AQA A Level Physics, OCR A and B , Edexcel, CIE, IB and many similar courses such as AP Physics. In this circuit, the current increases and the p.d. decreases which presented "big gaps" in knowledge according to some examiners reports.How Id Prepare for a Physics Olympiad - Dynamics (1)ZPhysics2024-04-11 | My Physics Tutoring: zphysicslessons.net/physics-tutoring Learn Olympiad Physics Playlist: youtube.com/playlist?list=PLSygKZqfTjPCKus_q7vWTaRClR2hi6XFe This video takes you through the basics of dynamics and Newton's Laws and applies to problems from the International Physics Olympiad. It is also suitable for preparation for the basics for competitions such as the IPhO, the Asian Physics Olympiad, National Physics Olympiad, JEE Main and Advanced and Similar. It often looks at concepts which are mostly taught in university in preparation for Physics Olympiads. I hope it is useful.
Chapters: 00:00 Newton's Laws of Translational Motion 01:48 Impulse 03:27 Center of Mass 05:47 Center of Mass on a Uniform Rod 09:07 Statics - Balancing Forces, Torques 09:58 Normal Forces 12:27 IPhO Problem - Balancing Forces, Force Diagram 21:43 Hooke's Law, Stress, Strain, Young's Modulus 22:47 Rotational Dynamics - Newton's Laws 24:40 Moment of Inertia 28:17 Moment of Inertia of a Uniform Rod about its edge 31:20 Moment of Inertia of a Uniform Ring about its centre 32:49 Moment of Inertia of a Disc (Cylinder) about its centre 36:19 Moment of Inertia IPhO Problem 40:14 Rotational Dynamics IPhO To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinYou NEED to Practice This in A Level PhysicsZPhysics2024-04-01 | My Physics Tutoring: zphysicslessons.net/physics-tutoring Get confident in Practical Skills Questions: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join My Physics Workbooks: zphysicslessons.net/my-workbooks Here is a variation of a very typical motion and forces question in A Level Physics. It looks at the power output to go up/down an inclined slope and then to estimate one of the distances. Variations of this question keep appearing in many exam boards including AQA A Level Physics, OCR Physics A and B, Edexcel A Level Physics, CIE etc. and similar courses such as AP Physics, IB Physics etc. I hope this problem is useful! Please note some of the values may not be accurate as I thought of them "on the spot" while doing the problem to illustrate the concept and that I am assuming that the car acts as a single material point and I am not considering the effect of torques and moments.You NEED to Understand This Topic for A Level PhysicsZPhysics2024-03-24 | Get My Electric Fields Workbook: zphysicslessons.net/electric-fields-workbook My Physics Sessions: zphysicslessons.net/physics-tutoring Join My Free Physics Newsletter: zphysicslessons.net/about Here is an A Level Physics Question on electric fields. Please note that this is not an official question, however it similar to many past paper questions in the past. This question is applicable to all exam boards inlcuding AQA, OCR A, Edexcel, CIE Cambridge International and similar courses such as IB Physics and AP Physics. We explore the movement of charged particles in a uniform electric field to calculate the acceleration and the trajectory between the plates.FUN Oxford PAT Physics Problem - Snells WindowZPhysics2024-03-19 | Join my Oxford PAT April Session: zphysicslessons.net/oxford-pat-april-session My Physics Tutoring: zphysicslessons.net/physics-tutoring Here is a question from the 2023 PAT Oxford Entrance exam on refractive index. This is a very fun question on a phenomenon known as Snell's Window that uses the concept of refractive index, the critical angle and total internal reflection to derive a concept.
Please note that this is not an official solution, all credit to the question goes to Oxford and the solution may be wrong. Let me know if you spot something! You can access the original paper here: physics.ox.ac.uk/system/files/file_attachments/PAT-2023.pdf
In this video we will do lots of multiple choice A Level Physics Practice. Please note that I have seen and solved most of these questions at various parts of my teaching in the past, however I did not do any specific practice before I started filming other than opening up the papers.
Chapters: 00:00 EM Spectrum 01:20 Kirchoff's Laws 02:06 Refractive Index 03:22 Young's Double Slit 05:37 Power, kinetic energy 07:19 Phase Difference 09:56 Resistors in Parallel 11:17 Internal Resistance 13:55 Moments and perpendicular distance 16:52 Current and number of electrons 18:16 Electric Motor and Efficiency 20:06 Polarisation 20:28 Young's Modulus 23:19 Thermistor 23:45 Moments 26:29 IV Characteristics 28:17 Photoelectric Effect 28:39 Electron Energy, eV 29:08 Waves 29:55 Intensity 31:00 Scalars and Vectors 31:37 Absolute Uncertainty from Data 32:35 Motion Graphs 33:32 Net Force 35:11 Moments 36:13 2D Momentum 39:32 Specific Heat Capacity and Graphs 41:01 Assumptions of Kinetic Theory of Gases 42:00 Root Mean Square Speed 44:57 Simple Harmonic Motion and Energy 46:00 Units 46:30 Energy Levels 47:28 Diffraction Gratings and Doppler's Effect 53:52 Age of the Universe and Hubble's constant 55:56 Cosmological PrincipleGeneral Relativity on a School Exam?!ZPhysics2024-03-06 | My Physics Tutoring: zphysicslessons.net/physics-tutoring All of A Level Physics: youtube.com/playlist?list=PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=OfxSlhvhyeXgKYOh To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join In this video we look at an amazing problem from the British Physics Olympiad Senior Physics Challenge, BPhO SPT from 2017. Please note that full credit to this amazing problem goes to the British Physics Olympiad team - what an amazing problem! Find the original paper here: bpho.org.uk/Papers/SPC/BPhO_AS_2017_QP.pdf Mark Scheme: bpho.org.uk/Papers/SPC/BPhO_AS_2017_MS.pdf We use energy conservation and some quantum physics to derive a classical approximation of the change in frequency of a photon in a gravitational field. Please note that this is not an official solution and I may have some mistakes. The Problem can also be used as a challenge problem for A Level Physics for all exam boards including OCR, AQA, Edexcel, CIE etc.Physics Teachers VS British Physics Olympiad Senior ChallengeZPhysics2024-03-03 | My Physics Tutoring and courses: zphysicslessons.net/physics-tutoring Check Out A Level Physics Online: alevelphysicsonline.com Join my Free Physics Newsletter: zphysicslessons.net/about @PhysicsOnline and ZPhysics take on the British Physics Olympiad Senior Challenge for Year 12. We have a look at some of the problems on the challenge, how to prepare and tackle the interesting physics problems on mechanics. Please note these are not official solutions and there could be mistakes or inaccuracies. Please visit the excellent website for the British Physics Olympiad to access the paper here: bpho.org.uk/Papers/SPC/BPhO_SPC_2022_QP.pdf The mark scheme can be found here: bpho.org.uk/Papers/SPC/BPhO_SPC_2022_MS.pdf To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join90% of A Level Physics Students Got This WrongZPhysics2024-02-25 | Get More Uncertainty Practice: zphysicslessons.net/ultimate-uncertainties-physics-workbook- My Physics Tutoring: zphysicslessons.net/physics-tutoring My Free Physics Newsletter: zphysicslessons.net/about Here is a physics problem in A Level Physics in which the examiner report identified that only 10% of students could score 2/2. The problem is on magnetism in A Level Physics and is from OCR Physics A from 2021 however it can be used as a practice problem for all exam boards including AQA A Level Physics, Edexcel, Eduqas, CIE 9702 Syllabus etc. The problem involves using the right hand rule for the direction of the magnetic field around a wire and it involves a trick. The 2nd part of the problem involves calculating the uncertainty using the rules for absolute and percentage uncertainties in A Level Physics. Please note that these are not official solutions and I am not affiliated with the exam board. Please access the original paper here: ocr.org.uk/Images/667296-question-paper-exploring-physics.pdf Question 19 And the Mark Scheme: ocr.org.uk/Images/667301-mark-scheme-exploring-physics.pdf To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinNOT Everyone Revises This in A Level PhysicsZPhysics2024-02-20 | My Physics Tutoring: zphysicslessons.net/physics-tutoring My Free Physics Newsletter: zphysicslessons.net/about My Physics Workbooks: zphysicslessons.net/my-workbooks Here is an excellent revision question on A Level Physics and AS Level Physics. This is an OCR Physics A question, however the material is covered bye all exam boards including AQA Physics, Edexcel, OCR A and B, CIE 9702 Syllabus Cambridge International, Eduqas etc. This question explores the work function, the emission of electrons and the photoelectric effect and a calculation of De Broglie Wavelength.
To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinHow Id Prepare for Physics Olympiads - KinematicsZPhysics2024-02-18 | All My Physics Olympiad Solutions: youtube.com/playlist?list=PLSygKZqfTjPCKus_q7vWTaRClR2hi6XFe&si=dA9WwhViVnFaqxDa My Physics Tutoring: zphysicslessons.net/physics-tutoring Here is how I would prepare for a Physics Olympiad, including the International Physics Olympiad, National Rounds, European Physics Olympiad (EUPhO), Asian Physics Olympiad. Parts of this guide can also be used for the preparation of entrance exams including the JEE Advanced, JEE Main. Elements of this can be used to prepare for the Oxford PAT and Cambridge ENGAA, however mainly the graphs and the displacement by differentiation and integration as rotational physics is not really on the syllabus from what I can see. Please note that if you are preparing for the Y12 Senior Physics Challenge this video is a little bit too advanced for this yet, so don't be alarmed if you find it tricky. This is also excellent preparation for university courses in Physics and Engineering. Chapters: 00:00 Syllabus 00:24 Displacement vectors 00:56 Velocity and Acceleration as derivatives 02:30 Uniform Motion 03:12 Uniform Motion Graphs 04:15 Equations of Motion (SUVAT) 05:24 BPho Problem - Non-Uniform Motion and Derivatives 10:20 Non-uniform Motion and Integration 11:50 Uniform Circular Motion - angular velocity 13:00 Relationship between linear and angular velocity 14:14 Angular velocity in terms of T and f 14:56 Angular Acceleration 15:37 Graphs at constant angular velocity 16:19 IPhO Problem - rotational velocity, radial and tangential coordinates 21:27 Centripetal Acceleration 21:53 Centripetal Acceleration Proof via similar triangles 22:05 Motion on a curve 23:21 Constant Angular Acceleration 24:43 Non-uniform Circular Motion 25:06 A tricky vector difference 25:55 Relative velocity - Galilean Transformations 27:40 Relative velocity in 2D 29:38 IPhO Problem- Relative velocity in Rotation 34:00 Rolling Without Slipping 35:40 Point of contact in rolling without slipping 37:06 Rolling WITH Slipping 38:20 Skidding condition 39:18 No mechanical work by forces while rolling without slipping 40:04 Fastest Point on a Wheel 40:56 Example Problem: Velocity on a point on a wheel 43:20 APhO Problem - Rolling without slipping, cylinders
I hope this video helps answer the question "How to Solve Problems in Physics"
To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinDont Miss This on Physics Olympiads (and Oxford PAT)ZPhysics2024-02-07 | My Physics Tutoring: zphysicslessons.net/physics-tutoring Here is a look at a crucial technique for Physics Olympiads and also for Oxbridge Entrance Exams such as the Oxford PAT, I have also seen it appear multiple times at the JEE Advanced for aspirants. That is - dimensional analysis and units. We look at solution of the Oxford PAT from 2023, in particular question 16. Please find the original paper here: physics.ox.ac.uk/system/files/file_attachments/PAT-2023.pdf Please note that this is not an official solution, I am not affiliated with Oxford University, if you spot a mistake, do let me know. This question can also be used as an extension for A Level Physics Questions or similar courses such as AP Physics, IB Physics etc. I hope this is video is helpful! To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinIf I wanted an A in Physics, Id focus on thisZPhysics2024-02-04 | Join my live physics sessions: zphysicslessons.net/physics-tutoring My free Physics Newsletter: zphysicslessons.net/about My Physics Workbooks: zphysicslessons.net/my-workbooks How do we solve Physics problems? In this video I look at what I think is one of the most important high level skills in A Level Physics - staying calm and breaking down a problem into individual easy smaller problems. As an example I look at problem 22 (Astrophysics) from OCR Modelling Physics 2022. Please find the original paper below: ocr.org.uk/Images/676906-question-paper-modelling-physics.pdf The Mark Scheme is here: ocr.org.uk/Images/677043-mark-scheme-modelling-physics.pdf Please note that this is not an official solution, I am not affiliated with the exam board. Please let me know if you find an accuracy or a better way to approach the problem. This is a problem that can be used for revision for all exam boards including OCR A Level Physics, AQA A level Physics, IB, Cambridge International CIE 9702 syllabus and similar courses such as AP Physics for example. To solve this problem we use many concepts such as Stefan Boltzman's Law, Wien's Law, Stellar Evolution, etc.
How to learn and solve physics problems? Lewis from @PhysicsOnline will give us a masterclass on problem solving in A Level Physics using the following paper from OCR: ocr.org.uk/Images/676908-question-paper-unified-physics.pdf Please note that neither of us is affiliated with the exam board and these are not official solutions, just our individual approach to problems.
We look at Question 1 and 2 on astrophysics and oscillations and experimental uncertainties. This is an excellent resource for physics revision as well applicable to all exam boards including OCR A Level Physics, AQA Physics, Edexcel, CIE Cambridge International and others similar qualifications such as AP Physics, IB Physics etc.
Chapters: 00:00 Paper 3 Thoughts 00:40 Gravitational Field Strength 01:23 Question Data Tip 02:41 Significant Figures 02:55 Order of Magnitude of Answers 03:21 Centripetal Acceleration 04:09 Removing parts of a question 04:24 Centripetal acceleration and orbits 05:50 When is g negative? 07:00 Upthrust and Archimedes Principle 08:25 Avoid Distractors 09:09 Explain questions 13:49 Centripetal Force as Resultant Force 15:35 Measurement Questions 16:47 Measuring Time Period of a Pendulum Uncertainty 18:33 Linear y=mx+c analysis 19:40 Finding constants from graphs 21:36 Line of Worst Fit 22:19 Gradient Tip 22:55 Percentage Uncertainty in the gradient 26:08 Percentage Difference To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinIMPORTANT Derivations in Physics: Bernoullis EquationZPhysics2024-01-14 | My A Level Sessions: zphysicslessons.net/physics-tutoring My Physics Workbooks: zphysicslessons.net/my-workbooks Join my free physics newsletter: zphysicslessons.net/about In Physics, derivations are arguably more important than solving lots of exam physics problems for the deep understanding of the subject and preparing for university physics work, postgraduate work and beyond. In this video we derive an amazing equation from Fluid Mechanics/Fluid Dynamics, the Bernoulli Equation (Principle), that is used to explain how lift is generated on airfoils, how water flows and many other amazing applications in physics, applied mathematics, engineering - including mechanical and aerospace engineering. This derivation is also applicable to physics olympiad preparation including preparation for the IpHo and national physics olympiads and it is also on the JEE Advanced Specification. It can also be used as a challenge for courses in further mathematics and a level physics. To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinHow Id Solve a Physics ProblemZPhysics2024-01-07 | My Physics Tutoring: zphysicslessons.net/physics-tutoring My Physics Workbooks: zphysicslessons.net/my-workbooks Join my free Physics Newsletter: zphysicslessons.net/about Here is a problem from the 2022 ENGAA/ NSAA Cambridge Admission test. I gave myself a problem to solve to try and highlight problem solving techniques and how to learn physics. Please note that is applicable directly to A Level Physics (all exam boards - AQA A Level Physics, OCR A Level Physics, Edexcel, CIE Cambridge International 9702, etc) and similar courses such as IB Physics, AP Physics, etc. The question is about a pendulum and it involves a mixture of conservation of energy and conservation of momentum. I greatly enjoyed it! Please note that this is not an official solution, I am not affiliated with Cambridge, and please check out the official paper here, I did Q11 from section 2 2022 (sorry there is a typo I wrote 2021 in the video): undergraduate.study.cam.ac.uk/sites/www.undergraduate.study.cam.ac.uk/files/publications/engaa_2022.pdf
This problem can be used as a revision tool on how to learn physics for Paper 1, Paper 2, Paper 3 and admission tests. Hope it is useful!
Here are some extremely common A level Physics mistakes as based on the 2022 papers from all exam boards including OCR, AQA, Edexcel, CIE etc. Please note these are not official solutions and I am not affiliated with an exam board. If you spot a more efficient way of solving something or a mistake, please let me know!
These topics are excellent for physics revision and they are crucial for ways to learn physics well, problem solve and analyse a-level physics solutions.
Chapters: 00:00 2D Momentum 01:52 Weight Newtonian Pair 02:52 Multi Step Calc - diffraction and doppler 05:30 Try this! 06:37 Mass of a volume of fluid 07:50 Newton's 2nd Law for variable mass 08:47 Trick I wish I learned earlier! Units 09:45 Radioactive Decay and Half Life 11:03 Beta Decay Graph 12:26 Explanation Questions - refractive index 13:48 Potential Divider Trick 15:23 My Physics Tutoring 15:34 When you can't use SUVAT
To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinThis Stops 93% from getting an A in PhysicsZPhysics2023-11-26 | To try everything Brilliant has to offer—free—for a full 30 days brilliant.org/Zphysics The first 200 of you will get 20% off Brilliant’s annual premium subscription. This video is sponsored by Brilliant. Huge thanks to them! My Physics Workbooks: zphysicslessons.net/my-workbooks Get Free Physics Tips on my Newsletter: zphysicslessons.net/about Here are some tips on some of the most common mistakes in Physics courses such as A Level Physics, AP Physics, IB Physics including all exam boards such as OCR Physics, AQA Physics, Edexcel Physics, CIE Cambridge International 9702 etc. We look at problems in motivation, maths, how to learn physics and problem solving techniques. The cup analogy is inspired by Ed from Film Booth! Thanks! I hope this video is useful! To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinHow Id Learn This Topic in PhysicsZPhysics2023-11-19 | Join my live class: zphysicslessons.net/physics-tutoring Get My Gravitation Workbook: zphysicslessons.net/my-workbooks Get free physics Tips on my mailing list: zphysicslessons.net/about Here is how I'd learn Gravitational Fields in A level Physics by a series of problems and physics solutions and past paper questions. In this video I go over a couple of trickier problems to help learn some of the concepts of gravitational field strength, the gravitational potential as work done and also ratios. This video is suitable for all exam boards including OCR A Level Physics, AQA A level Physics, Edexcel, CIE Cambridge International 9702, etc and also for similar courses such as AP Physics, IB Physics etc.
To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinOnly 30% Solve This Physics ProblemZPhysics2023-11-12 | Get My Physics Workbooks with video solutions: zphysicslessons.net/my-workbooks Join my free mailing list to get physics tips: zphysicslessons.net/about Here is a problem with two springs connected to an object. This can be a little counter intuitive and this type of situation can come up in problems in A Level Physics, AP Physics, IB Physics and similar courses. This problem is applicable to all exam boards including AQA Physics, OCR Physics A and B, CIE Cambridge Syllabus, Edexcel, Eduqas, etc. The solution involves energy in simple harmonic motion and the energy of each individual spring being converted to kinetic energy. Please note that this can also be solved using forces but the solution would be considerably trickier. I hope this video is useful! To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinLAST Question from the British Physics OlympiadZPhysics2023-11-05 | Join my free Physics Newsletter: zphysicslessons.net/about My Physics Workbooks: zphysicslessons.net/my-workbooks Here is the last question from the British Physics Olympiad Round 1 2022 Section 2 on the JWST telescope on astrophysics! The question uses an Image from the James Webb Space Telescope to cover the physics of star formation in the nebula known as "The Pillars of Creation" where star clusters are born. Amazing! Please note that these are not official BPhO Round 1 solutions and many thanks for the AMAZING question from the British Physics Olympiad Team! Check out their amazing resources on their website: bpho.org.uk Link to the paper: Q5 from bpho.org.uk/Papers/R1/2022Nov_R1_S2.pdf Official Mark Scheme: bpho.org.uk/Papers/R1/2022Nov_R1_Marking.pdf Please note that this is not an official solution and there may be better ways of tackling the problem.
Chapters: 00:00 a I Finding the star's wavelength 02:25 The radius of the Bubble in the Nebula 06:37 b Mass of collapse 10:30 c Pressure at the centre of the Sun 12:27 c ii Radiation pressure VS Total Pressure 13:09 c iii Gravitation Pressure Integral 17:11 d I Time for Photon to reach the surface of the Sun 20:00 d ii Mean Free Path of Photons inside the Sun 23:29 e Neutrinos to study The Sun 27:22 WATCH this To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join7 Steps for Gold in a Physics OlympiadZPhysics2023-10-29 | To try everything Brilliant has to offer—free—for a full 30 days brilliant.org/Zphysics The first 200 of you will get 20% off Brilliant’s annual premium subscription. This video is sponsored by Brilliant. Huge thanks to them! Join my free physics Newsletter: zphysicslessons.net/about Here are some tips on how to prepare for Physics Olympiads. Upgrade your Physics: bpho.org.uk/Resources/upgrade-your-physics They are applicable to all Physics Olympiads, for example - The British Physics Olympiad Round 1, The British Physics Olympiad Senior Challenge, American F=ma exam, American Physics Olympiad, the Asian Physics Olympiad and of course, the International Physics Olympiad. As examples I am using the syllabus of the international physics olympiad IPhO. This can be accessed here: ipho-new.org/statutes-syllabus (you need to scroll down near the end of the page)
I solve cover an overview of the mathematics required including calculus, differential equations, differentiation and integration.
And some problem solving techniques for physics olympiads and some wider topics such as time management.
I hope this video is very useful!
Chapters: 00:00 First Step 00:35 The Syllabus 01:12 Books 01:40 Important Mathematics Tricks 05:03 Next Step 05:27 Problem Solving Tips 07:01 Working as a Team 07:49 Most important Advice
Some problems which I have showcased: International Physics Olympiad 2023 Problem 1: ipho2023.jp/en/wp-content/uploads/2023/08/solution_theory1.pdf Asian Physics Olympiad Drag on a Falling Magnet Problem: apho.olimpicos.net/pdf/APhO_2012_Q1.pdf Mark Scheme on the 2007 IPhO: s3.eu-central-1.amazonaws.com/physprob.com/files/ipho/2007_Iran_p1Sol.pdf Attribution for the parallel axis drawing: Jack Ver, under a Creative Commons license: creativecommons.org/licenses/by-sa/3.0/deed.en Gold medal image free to use from: pngegg.com To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join10 Problems to MASTER Circular MotionZPhysics2023-10-24 | My Circular Motion Workbook: zphysicslessons.net/my-workbooks ALL types of Circular Motion Questions - Multiple Choice, Derivations, Calculations, 6 marker questions. Join my free mailing list: zphysicslessons.net/about Circular Motion is Crucial for Success in A Level Physics. This video is a guide to solving practice questions similar to past paper questions and is excellent for both revision and learning. It si applicable to all exam boards including AQA, OCR, Edexcel, Eduqas, CIE international A Level Physics Chapters: 00:00 Time Period and Frequency 00:32 Angular Velocity 01:07 Linear Velocity 01:46 Angular Velocity of Jupiter 02:33 Which is incorrect? 03:35 My Workbooks 03:58 Linear Analysis 04:37 Centripetal Force 05:54 COMMON Mistake! 06:40 Circular Motion at an angle- IMPORTANT 09:19 Vertical Circular Motion
To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/joinLAST Question from Cambridge Admission ExamZPhysics2023-10-15 | My Oxbridge Tutoring Sessions: zphysicslessons.net/physics-tutoring Join my free physics newsletter: zphysicslessons.net/about Here is a solution to question from the 2020 ENGAA Cambridge Admissions Exam. Please note that these are not original solutions. You can find the original exam paper here: undergraduate.study.cam.ac.uk/sites/www.undergraduate.study.cam.ac.uk/files/publications/engaa_past_paper_2020_0.pdf This question is excellent preparation for the ENGAA exam, the NSAA and also the PAT exam for Oxford. It can also be used to practice for other exams such as the JEE Main, JEE Advanced, Physics Olympiads. This question was first introduced to me by subscribers and also successfully solved by some, well done abc-vc4ml ! The question is about internal resistance and uses the physics of circuits and the use of calculus to find an inflection point by differentiating with respect to the current. I hope it's useful and good luck in preparing for the ENGAA! It can also be used as a stretch and challenge question for A-Level Physics. To support this channel: youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join