Question

A short bar magnet of magnetic moment is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is

A

0.064 J

B

-0.064 J

C

zero

D

0.082 J

Medium
Updated on : 2022-09-05
Solution
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Correct option is B)

Potential energy of a magnet with magnetic moment placed in a magnetic field is given by 
which is smallest for
Hence

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