JEE Mains 05-Sep-2020 Shift 1 Solved Paper

A square loop of side 2 a, 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: