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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 induced electric field due to the changing magnetic field.

B

the current source

C

the lattice structure of the material of the rod

D

the magnetic field

Text Solution

Verified by Experts

The correct Answer is:
B
A magnetic field is formed between the two poles of the magnet when the flow of current is turned on.
The drawback of diamagnetic is that it is pushed from the dominant magnetic field to the weak magnetic field and hence the function happens.
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