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28 octobre 2022 - 01:34
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Why outlets spark when unplugging - EMF & Inductors
How to shrink a quarter: https://www.youtube.com/watch?v=d2TDXKfBaMQ
Oxygen is magnetic? https://www.youtube.com/watch?v=pB-qAwkgfFQ
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When we cut the electricity to an inductor, we get a sudden intense spark across the switch. This is known as inductive kickback or a back EMF and is produced because of Faraday’s Law of Induction. Not mean to be tried at home! The inductor doesn’t want to change its current, so the change in magnetic field creates an EMF resulting in a high voltage across the switch. #PHYSICS
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Creator/Host: Dianna Cowern
Editor: Jabril Ashe
Animations: Dianna, Jabril & Kyle Norby
Thanks to Dan Walsh, Josh Wolfe, and the MIT Technical Services Group!
Music: APM and YouTube
Happy Physicsing!
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