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A bar magnet is rotated on a shaft near ...

A bar magnet is rotated on a shaft near a coil which is connected to a resistor of resistance R as shown in the figure.
To increase the induced current in the given coil.
I. Move the magnet closer to the coil.
II. Rotate the magnet in the opposite direction at the same speed.
III. Rotate the magnet in the opposite direction with greater speed.
IV. Increase the number of turns in the coil.

A

I and II only

B

III and IV only

C

I, III and IV only

D

I, II, III and IV

Text Solution

Verified by Experts

The correct Answer is:
C
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