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Question
Assertion (A): More powerful is the inducing magnet, more is the magnitude of induced e.m.f. in a closed coil.
Reason (R): Magnetic energy of the powerful magnet changes into electric energy.
Options
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
Assertion (A) is false, but Reason (R) is true.
Assertion (A) is true, but Reason (R) is false.
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Solution
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
Explanation:
The assertion is true because a more powerful magnet produces a greater change in magnetic flux, so the induced e.m.f. is larger. The reason is also true because the mechanical work done in moving the magnet is converted into electrical energy. However, this energy conversion does not explain why a more powerful magnet gives a larger induced e.m.f. So both are true, but the reason is not the correct explanation.
