JEE Main 20206 Sep, Evening shiftPhysicsHardMagnetic Effects of Current and Magnetism165× since 2002
A square loop of side 2 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 z-axis and passing through point (0, b, 0),
(b >> a). The magnitude of torque on the loop about z-axis will be :