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A cylinder bar magnet is rotated about i...

A cylinder bar magnet is rotated about its axis. A wire is connected from the axis and is made to touch the cylindrical surface through a contact. Then

A

a direct current flows in the ammeter A

B

no current flows through A

C

an alternating sinusoidal current flows through the ammeter A with time period, `T=(2pi)/(omega)`

D

a time-varying non-sinusoidal current flows through ammeter A

Text Solution

Verified by Experts

The correct Answer is:
B
Since there is no change in magnetic flux linked with the circuit, no current will flow through the ammeter A.
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