Question

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

Answer 1

Answer:

The source of the current.

Explanation:

As we know that

For Diamagnetic Substance -

B<B0, B/B0<1

Relative permeability of diamagnetic substance.

So when current source is switched on, magnetic field is set up between the poles of electromagnet

Diamagnetic material due to its tendency to move from stronger to weaker field , is thus repelled out so it happens because of the current source.