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GK QUESTION#2980

Which law explains that the induced electromotive force (EMF) in a circuit is directly proportional to the rate of change of magnetic flux through it?

  1. AFaraday’s LawCorrect answer
  2. BCoulomb’s Law
  3. CKirchhoff’s Laws
  4. DLaplace’s Law
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Answer

A. Faraday’s Law

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Explanation

Faraday’s law relates induced emf to the rate of change of magnetic flux linkage. For a fixed number of turns, the emf magnitude increases with the magnitude of the flux-change rate; the direction is accounted for by Lenz’s law.

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