Uploaded October 2025 | Updated September 2026, 2 weeks ago
In a parallel circuit, which bulb will light up first? The one with the short wires or the one with long wires? This video demonstrates a simple way to visualise what is happening inside the circuit to help explain the answer.
Video from Simon Poliakoff: youtube.com/watch?v=3IVTCXn9gUk
Thanks for watching,
Lewis
___________________________________________
π CHAPTERS
00:00 Introduction and Simonβs Question
00:32 Setting Up the Parallel Circuit Demo
01:21 Do the Lamps Light Up at the Same Time?
01:41 Explaining with the Rope Loop Model
04:23 Applying the Model to AC Circuits and Conclusion
π¨ WATCH NEXT
All of AQA Waves Explained - A Level Physics: youtu.be/fbAm5psmdKY?si=-fc3writvZb_ZMGM
All of AQA Electricity Explained - GCSE Physics: youtu.be/EmCGF49Uils?si=TOq8HUraOXsSqU2c
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Practice A Level questions everyday in the lead up to your exams with our series of books to support your learning all year round. With answers, worked solutions and video work-throughs.
βΊ amazon.co.uk/Physics-Online/e/B09SHQ5R4B
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π¨βπ« ABOUT PHYSICS ONLINE
Quality trusted Physics so that you can achieve your highest grade. Founded by Lewis, a former Physics Teacher and Head of Science, Physics Online is now the leading brand for Physics videos and resources. With affordable Premium Plans and School Subscriptions, thousands of students and schools now use our resources to learn and revise every day.
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In a parallel circuit, which bulb will light up first? The one with the short wires or the one with long wires? This video demonstrates a simple way to visualise what is happening inside the circuit to help explain the answer.
Video from Simon Poliakoff: youtube.com/watch?v=3IVTCXn9gUk
Thanks for watching,
Lewis
___________________________________________
π CHAPTERS
00:00 Introduction and Simonβs Question
00:32 Setting Up the Parallel Circuit Demo
01:21 Do the Lamps Light Up at the Same Time?
01:41 Explaining with the Rope Loop Model
04:23 Applying the Model to AC Circuits and Conclusion
π¨ WATCH NEXT
All of AQA Waves Explained - A Level Physics: youtu.be/fbAm5psmdKY?si=-fc3writvZb_ZMGM
All of AQA Electricity Explained - GCSE Physics: youtu.be/EmCGF49Uils?si=TOq8HUraOXsSqU2c
π MENTIONED IN THE VIDEO
βΊ Daily Workbooks: amazon.co.uk/Physics-Online/e/B09SHQ5R4B
βΊ Practice Papers: https://physicsonline.shop/
βΊ Premium Plans: physicsonline.com/premium-plans
___________________________________________
π Subscribe for more FREE revision videos and resources:youtube.com/@PhysicsOnline π
π» REVISION WEBSITES
Join thousands of students and schools using our websites to learn and revise for your exams. Every video is organised by exam board and topic.
βΊ GCSE Students: gcsephysicsonline.com
βΊ A Level Students: alevelphysicsonline.com
ποΈ PREMIUM PLANS
Unlock access to every video and resource for up to 36 months.
βΊ physicsonline.com/premium-plans
π FREE RESOURCES
From Revision Guides to Practice Papers, download our free resources here.
βΊ GCSE: physicsonline.com/gcse-free
βΊ A Level: physicsonline.com/alevel-free
π SHOP PRACTICE PAPERS
Visit the shop to download both GCSE and A Level Practice Papers we've made so that you can practice as many questions as possible before your exams. Teacher editions also available.
βΊ https://physicsonline.shop/
π SHOP DAILY WORKOUT (Amazon Exclusive)
Practice A Level questions everyday in the lead up to your exams with our series of books to support your learning all year round. With answers, worked solutions and video work-throughs.
βΊ amazon.co.uk/Physics-Online/e/B09SHQ5R4B
π² FOLLOW US
βΊ TIKTOK: tiktok.com/@physicsonline
βΊ INSTAGRAM: instagram.com/physicsonline
βΊ YOUTUBE: youtube.com/@PhysicsOnline
βΊ TWITTER: twitter.com/legophysicsguy
βΊ LINKEDIN: uk.linkedin.com/company/physicsonline
π¨βπ« ABOUT PHYSICS ONLINE
Quality trusted Physics so that you can achieve your highest grade. Founded by Lewis, a former Physics Teacher and Head of Science, Physics Online is now the leading brand for Physics videos and resources. With affordable Premium Plans and School Subscriptions, thousands of students and schools now use our resources to learn and revise every day.
Find out more here: βΊ physicsonline.com
#PhysicsOnline
