A circular loop of area 1 cm², carrying a current of 10 A, is placed in a magnetic field of 0.1 T perpendicular to the plane of the loop. The torque on the loop due to the magnetic field is

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zero

$10^{- 2} Nm$

$10^{- 4} Nm$

1 Nm

answer is A.

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Detailed Solution

Since magnetic field is perpendicular to the plane of the loop, so magnetic moment vector of loop will be parallel to the magnetic field. Hence, torque on the loop will be zero.

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