A current of 0.5 A is passed through the coil of a galvanometer having 500 turns and each turn has an average area of 
. If a torque of 
is required for this coil carrying same current to set it parallel to a magnetic field, then calculate the strength of the magnetic field.
Text Solution
Verified by ExpertsThe correct answer is:
C
The magnetic moment of current loop,
A. 
Also, 
where, 
angle between 
and 
.
Here, 
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