A square loop of side 2a, and carrying current I, is kept in XZ plane with its centre at origin. A long wire carrying the same current I is placed parallel to the z axis and passing through the point (0, b, 0), (b >> a). The magnitude of the torque on the loop about z - axis is given by:

Correct Option - 4


Detailed Solution:

Kindly go through the solution

 

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