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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*064J`

Text Solution

Verified by Experts

Here, `M=0*4JT^-1`, `B=0*16T`
For stable equilibrium, the potential energy (U) of bar magnet in the magnetic field is
`U=-MB=-0*4xx0*16=-0*064J`
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