A circular coil of 30 turns and radius 
carrying a current of 
is suspended vertically in a uniform horizontal magnetic field of magnitude 
. The field lines make an angle of 
with the normal of the coil. The magnitude of the counter torque that must be applied to prevent the coil from turning is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Number of turns, 
turns
Radius, 
Current, 
Magnetic field, 
The magnitude of the counter torque will be
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