A solenoid of length 
and having 500 turns of wire carries a current 
. A thin coil having 10 turns of wire and radius 
carries current 
. The torque required to hold the coil in the middle of the solenoid with its axis perpendicular to the axis of the solenoid is 
SI units, 
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
For solenoid, 
For thin coil, 
Magneic field due to solenoid, 
Torque 
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