Assertion (A): When a bar magnet is moved towards a closed conducting loop, the induced current in the loop flows in a direction that repels the approaching magnet.
Reason (R): According to Lenz's Law, the direction of induced current is such that it opposes the change in magnetic flux that produced it.

Question

Assertion (A): When a bar magnet is moved towards a closed conducting loop, the induced current in the loop flows in a direction that repels the approaching magnet.

Reason (R): According to Lenz's Law, the direction of induced current is such that it opposes the change in magnetic flux that produced it.

TestHub · Accepted Answer

Lenz's Law states that the induced current opposes the change in magnetic flux that produces it. If a magnet approaches a coil, the magnetic flux through the coil increases.

To oppose this increase, the induced current generates a magnetic field that repels the approaching magnet, thereby opposing its motion. Thus, the assertion is a direct consequence of Lenz's Law.

Physics - EMI/AC Question with Solution | TestHub

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