A closely wound solenoid of 2000 turns and area of cross-section 1.5 10 -4 m 2 carries a…
Physics · Class 12 · CBSE — Moving Charges and Magnetism
A closely wound solenoid of 2000 turns and area of cross-section 1.5 10-4 m2 carries a current of 2.0 A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field 5 10-2 T, making an angle of with the axis of the solenoid. The torque on the solenoid will be:
- 1.5 \(\times\) 10-2 Nm
- 3 \(\times\) 10-3 Nm
- 1.5 \(\times\) 10-3 Nm
3 10-2 Nm
Answer
(B) 3 10 -3 Nm
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