A bar magnet of magnetic moment 
lies aligned with the direction of a uniform magnetic field of 0.3 
. The amount of work required by an external torque to turn the magnet so as to align its magnetic moment normal to the field direction is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Work required by an external torque to turn the magnet so as to align its magnetic moment normal to the field direction.
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