| Assertion: The induced e.m.f. in a conducting loop of wire will be non-zero when it rotates in a uniform magnetic field. |
| Reason: The e.m.f. is induced due to change in magnetic flux. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) if assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: B
Solution :
As the coil rotates, the magnetic flux linked with the coil (being \[\overrightarrow{B}\,.\,\overrightarrow{A}\]) will change and emf will be induced sin the loop. Thus depends on the plane of rotation. Only if the plane of rotation is parallel to the magnetic field, then no flux change hence, no emf is induced.
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