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A short bar magnet of magnetic moment 0*...

A short bar magnet of magnetic moment `0*4JT^-1` is placed in a uniform magnetic field of `0*16T`. The magnet is in stable equilibrium when the potencial energy is

A

`-0.064J`

B

zero

C

`-0.082J`

D

`0.064 J`

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The correct Answer is:
A
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