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A thin diamagnetic rod is placed ver...

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

A

the lattice structure of the materical of the rod

B

the magnetic field

C

the current source

D

the induced electric field due to the changing magenetic field

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