IMPORTANT Paper 3 A Level Physics Practice @zhelyo

Uploaded June 2026 | Updated September 2026, 3 weeks ago

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Here is a question practice for A Level Physics Paper 3 on electromagnetism and Lenz's Law.

It is excellent practice for all exam boards including OCR A, AQA, Eduqas, WJEC and others.

The question is from the Sample Paper from OCR. Please note that I am not affiliated with the exam board, this is not an official solution and the original question and mark scheme can be found here:

ocr.org.uk/Images/171758-unit-h556-03-unified-physics-sample-assessment-materials.pdf

IMPORTANT Paper 3 A Level Physics Practice

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$ALL of AQA Waves in 72 Minutes - Paper 1 A level Physics Revision My Physics Tutoring: https://zphysicslessons.net/physics-tutoring Prepare for Paper 3: https://www.youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join In this video we go over the whole of AQA waves specification in A Level Physics. It is also applicable to other exam boards such as OCR A Level Physics, Edexcel, Eduqas, WJEC, CIE etc. In this video we cover: 00:00 Oscillation of particles in medium - basic terms 01:38 Phase of a Wave 03:13 Phase Difference 03:57 Example Question - Phase Difference 05:41 Phase Difference Formulae 06:45 Transverse and Longitudinal Waves 07:48 Polarisation 09:30 Polarisation application - Polaroids 12:00 Polarisation application - aerials and transmitters 13:15 Stationary Waves - Formation 13:41 Differences between stationary and progressive waves 15:40 Phase in Stationary Waves 17:53 Harmonics 20:42 Example Problem - Stationary Waves 22:55 The First Harmonic Equation 26:13 Mass per unit length 27:44 The principle of superposition 29:07 Path Difference 31:19 Coherence 33:06 Youngs Double Slit Experiment 35:23 Conditions for Interference 36:51 Fringe Separation Equation 37:57 Derivation of Fringe Separation Equation 42:08 Superposition Example Problem 44:13 Conditions for a Maximum - Example 45:43 Conditions for a Minimum - Example 46:43 Fringe Separation Equation Example 48:40 Interference using white light 50:34 What is diffraction? 51:06 Diffraction from a single slit from monochromatic source 51:54 Diffraction from a single slit from white light 52:51 Variation of Central Maximum Width 53:58 Diffraction Grating Equation 57:35 Maximum number of Fringes in diffraction grating 01:00:14 Derivation of Diffraction Grating Equation 01:02:30 Safety in Lasers 01:03:22 Refractive Index 01:07:12 Snells Law of Refraction 01:07:33 Total Internal Reflection and Critical Angle 01:10:12 Fibre Optic Cables - modal and material dispersion$ $Physics Misteaks that cost A Grades To try everything Brilliant has to offer—free—for a full 30 days https://brilliant.org/Zphysics The first 200 of you will get 20% off Brilliant’s annual premium subscription. This video is sponsored by Brilliant. Huge thanks to them! Join my Physics Tutoring: https://zphysicslessons.net/physics-tutoring My Physics Workbooks: https://zphysicslessons.net/my-workbooks Join my free Physics Newsletter: https://zphysicslessons.net/about Here are some extremely common A level Physics mistakes as based on the 2022 papers from all exam boards including OCR, AQA, Edexcel, CIE etc. Please note these are not official solutions and I am not affiliated with an exam board. If you spot a more efficient way of solving something or a mistake, please let me know! These topics are excellent for physics revision and they are crucial for ways to learn physics well, problem solve and analyse a-level physics solutions. Chapters: 00:00 2D Momentum 01:52 Weight Newtonian Pair 02:52 Multi Step Calc - diffraction and doppler 05:30 Try this! 06:37 Mass of a volume of fluid 07:50 Newtons 2nd Law for variable mass 08:47 Trick I wish I learned earlier! Units 09:45 Radioactive Decay and Half Life 11:03 Beta Decay Graph 12:26 Explanation Questions - refractive index 13:48 Potential Divider Trick 15:23 My Physics Tutoring 15:34 When you cant use SUVAT Some of the questions are from the 2022 Modelling Physics Paper from OCR as credited in the video. Please find the original paper here: https://www.ocr.org.uk/Images/676906-question-paper-modelling-physics.pdf And the Mark Scheme: https://www.ocr.org.uk/Images/677043-mark-scheme-modelling-physics.pdf Examiners report: https://www.ocr.org.uk/Images/687915-examiners-report-modelling-physics.pdf To support this channel: https://www.youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join$

$All of Edexcel Waves in 67 Minutes My Physics Tutoring: https://zphysicslessons.net/physics-tutoring Extra Help: https://www.youtube.com/channel/UC3L5MO3gJTlB09wmmHGW5Qg/join Join my Free Mailing List: https://zphysicslessons.net/about In todays video we cover the whole of Edexcel and iEdexcel A Level Physics Waves. We cover everything from superposition to optics and rays for the Edexcel and international Edexcel syllabus/specificaiton. Please note that these solutions are not official and there may be mistakes. Please check the official Edexcel website for official mark scheme solutions: https://qualifications.pearson.com/en/qualifications/edexcel-a-levels/physics-2015.html The amazing standing wave animation shown: https://www.walter-fendt.de/html5/phen/standingwavereflection_en.htm Chapters: 00:00 Wave Definitions 01:58 The Wave Equation 02:46 Transverse and Longitudinal Waves 03:55 Longitudinal Waves Displacement Distance Graphs 07:26 Transverse Waves Graphs 08:10 Core practical speed of sound 11:13 Wavefront coherence path and phase difference 12:48 Phase Difference deep dive 15:50 Superposition 16:45 Interference and conditions 18:34 Superposition problems 20:46 Stationary Waves visualisation 22:08 Standing Wave on a string 23:26 Standing Wave problem 24:55 The speed of a wave on a string 27:05 Harmonics 28:20 Intensity 29:49 Refractive Index 31:37 Snells Law 34:07 Total Internal Reflection and Critical Angle 37:08 Critical Angle Problem 40:51 Focal Length of Converging and Diverging Lenses Edexcel Only 42:54 Ray Diagram Convering Lens Edexcel Only 44:04 Real and Virtual Image Edexcel Only 46:05 Diverging Lens Diagram Edexcel Only 46:44 Power of a Lens 48:35 Power of a Lens submerged in water 49:40 The Lens Equation 50:56 Lens Practice question 54:21 Polarisation 58:47 Diffraction Huygens Principle 01:01:37 Huygens Principle Sample Problem 01:02:56 Diffraction Gratings$

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