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Question

Define electromagnetic induction.


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Solution

Electromagnetic induction:

Electromagnetic induction is a phenomenon in which a certain electromotive force (EMF) is induced in a particular circuit due to altering magnetic flux. This theory was proposed by J.C Maxwell and Michael Faraday in the year 1831. Some of the applications of electromagnetic induction are,

1. AC generator

2. Electric transformer

3. Inductors, motors, and generators

Mathematical relation of electromagnetic induction:

The formula of electromagnetic induction is,
E=Ndϕdt

Here, N is the number of coils, E is the induced voltage, dϕis the change in magnetic flux, and t is the time.


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