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A closely wound solenoid of 2000 turns a...

A closely wound solenoid of 2000 turns and area of cross-section `1.5xx10^(-4)m^(2)` carries a current of 2.0 a. it suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field `5xx10^(-2)` tesla making an angle of `30^(@)` with the axis of the solenoid. The torque on the solenoid will be:

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