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A closely would solenoid of 2000 turns a...

A closely would solenoid of 2000 turns and area of cross-section `1.6xx10^(-4)m^(2)`. Carrying a current of 4.0A. Is suspended through its centre allowing it to turn in a horizontal plane.
(a) What is the magnetic moment associated with the solenoid?
(b) What is the force and torque on the solenoid if a uniform horizontal mangetic field of `7.5xx10^(-2)T` is set up at an angle of `30^(@)` the axis of the solenoid?

A

`1.28Am^(2), 0.042 Nm`

B

`1 .28Am^(2), 0.048 Nm`

C

`2.28Am^(2), 0.038 Nm`

D

`1.28Am^(2), 0.0038 Nm`

Text Solution

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The correct Answer is:
B
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