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A wire loop is rotated in magneitc field...

A wire loop is rotated in magneitc field. The frequency of change of direction of the induced e.m.f. is.

A

once per revolution

B

twice per revolution

C

four times per revolution

D

six times per revolution

Text Solution

Verified by Experts

The correct Answer is:
B

`e=N omega AB sin omega t`
direction of e.m.f. changed two times
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