Question

Faraday's laws of electromagnetic induction and its derivation

Answer 1

Faraday's law of electromagnetic induction can be stated as:

1st law:
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Whenever there is a change in magnetic flux linked with a circuit, an induced emf and consequently a current is induced in circuit.

2nd law:
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The magnitude of a induced emf is directly proportional to the rate of change of magnetic flux linked with the specific loop.

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Derivation:
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ë = -n d¢/dt __
(where ë = induced emf : n= number of turns and ¢ = flux).

I = ë/r _(where I=current and r=resistance)
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Answer 2

Faraday's law of induction is a basic law ofelectromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force (EMF)—a phenomenon called electromagnetic induction. It is the fundamental operating principle of transformers, inductors, and many types of electrical motors, generators andsolenoids.

The Maxwell–Faraday equation is a generalization of Faraday's law, and is listed as one of Maxwell's equations.