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Physics Girl

Why outlets spark when unplugging - EMF & Inductors

Not mean to be tried at home!

04/19/2017

FromDigital Studios

Physics Girl

Why outlets spark when unplugging - EMF & Inductors

Season 2 Episode 20 | 6m 30sVideo has Closed Captions

Not mean to be tried at home!

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

04/19/2017

FromDigital Studios

Problems playing video?   | Closed Captioning Feedback

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Problems playing video?   | Closed Captioning Feedback

Report a Problem

Before you submit an error, please consult our Video Help page.

Physics Girl

Why outlets spark when unplugging - EMF & Inductors

Season 2 Episode 20 | 6m 30sVideo has Closed Captions

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

04/19/2017

FromDigital Studios

Problems playing video?   | Closed Captioning Feedback

Report a Problem

Before you submit an error, please consult our Video Help page.

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