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Question

During electromagnetic induction, the direction of induced e.m.f. is given by


A

Faraday’s law

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B

Lenz’s law

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C

Maxwell’s law

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D

Ampere’s law

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Solution

The correct option is B

Lenz’s law


  1. According to Lenz's law of electromagnetic induction, the direction of induced current or emf in a given magnetic field is such that it opposes the induced change by modifying the magnetic field.
  2. Induced emf is represented by e=N(/dt) where ϕ is the change in magnetic flux and N is the number of turns in the coil.
  3. The direction of the induced current is determined using Lenz's law.

Hence, option B is the correct answer.


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