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A thin diamagnetic rod is placed vertica...

A thin diamagnetic rod is placed vertically between the poles of an electromagnet . When the current in the electromagnet is switched on , then the diamagnetic rod is pushed up , out of the horizontal magnetic field . Hence the rod gains gravitational potential energy . The work required to do this comes from

A

The lattice structure of the material of the rod

B

The magnetic field

C

The current source

D

The induced electric field due to the changing magnetic field

Text Solution

Verified by Experts

The correct Answer is:
C
Energy from the current source is used to apply force on rod to impart kinetic energy to it and thus rod goes up to increase its gravitational potential energy.
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