A short bar magnet of magnetic moment 0.4J T –1 is place in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is:
Text Solution
Verified by ExpertsThe correct answer is:
A
Here magnetic moment, 
Magnetic field, 
When a bar magnet of magnetic moment 
is placed in a uniform magnetic field 
, its potential energy is :
For stable equilibrium, 
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