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A solenoid of length 0.4 m and of 500 tu...

A solenoid of length 0.4 m and of 500 turns carries 3 A current. A thin coil of 10 turns and of radius 0.01 m carries 0.4 A current. Calculate the torque required to hold the coil in the middle of the solenoid with its axis parallel to the axis of the solenoied. `[mu_(0)=4pixx10^(-7)H.m^(-1)]`

A

`5.92x10^(-6)` N.m

B

`5.92x10^(-5)` N.m

C

`5.92x10^(-4)` N.m

D

`0.592x10^(-3)` N.m

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The correct Answer is:
A
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