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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.
(1.) Once per revolution
(2.) twice per revolution
(3.) four times per revoution
(4.) six time per revolution

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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