Engineering Board Exam Reviewer · Physics · easy

Lenz's law states that the direction of an induced current is such that it:

1. Opposes the change in magnetic flux that produced it
2. Aids the change in flux
3. Is always clockwise
4. Is perpendicular to the magnetic field

Answer

A. Opposes the change in magnetic flux that produced it

Solution

This is the reason for the negative sign in Faraday's law.

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