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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

  • Option 1)

    the lattice structure of the material of the rod

  • Option 2)

     the magnetic field

  • Option 3)

     the current source

  • Option 4)

    the induced electric field due to the changing magnetic field

 

Answers (1)

best_answer

As we have learned

Diamagnetic Substance -

B<B0, B/B0<1 or frac{mu}{mu_{0}}<, mu_{r} <1

Relative permeability of diamagnetic substance.

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when current source is switched on, magnetic field sets up between poles on electromagnet

Diamagnetic material due to its tendency to move from stronger to weaker field , is thus repelled out 

 

 

 

 


Option 1)

the lattice structure of the material of the rod

This is incorrect

Option 2)

 the magnetic field

This is incorrect

Option 3)

 the current source

This is correct

Option 4)

the induced electric field due to the changing magnetic field

This is incorrect

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Aadil

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