33. A solenoid of 0.4m length with 500 turns carries
a current of 3A. A coil of 10 turns and of radius
0.01m carries' a current of 0.4A. The torque required
to hold the coil with its axis at right angles to that of
solenoid in the middle point of it is
1) 6π² x 10-7 Nm
2) 3π² x 10-7Nm
3) 9π²x 10-7Nm
4) 12π² x10-7Nm
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