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 cruurent I is placed parallel to z - axis and passing through point (0,b,0), (b >>a). The magnitude of troque on the loop about z - axis will be :

A square loop of side a carris a current I . The magnetic field at the centre of the loop is

A square loop of side a carris a current I . The magnetic field at the centre of the loop is

A square loop of wire of side a carries a current i . Calculate the magnetic field at the centre of the loop

A square coil ABCD lying in x-y plane with its centre at origin. A long straight wire passing through origin carries a current i=2t in negative z-direction. The induced current in the coil is

A square coil ABCD lying in x-y plane with its centre at origin. A long straight wire passing through origin carries a current i=2t in negative z-direction. The induced current in the coil is

A square coil ABCD lying in x-y plane with its centre at origin. A long straight wire passing through origin carries a current i=2t in negative z-direction. The induced current in the coil is

A square loop PQRS of side 'a' and resistance 'r' is placed near an infinitely long wire carrying a constant current I . The sides PQ and RS are parallel to the wire. The wire and the loop are in the same plane. The loop is rotated by 180^(@) about an axis parallel to the long wire and passing through the mid points of the side QR and PS . The total amont of charge which passes through any point of the loop during rotation is:

A rigid square loop of side 'a' and carrying current I_(2) is lying on a horizontal surface near a long current I_(1) carrying wire in the same plane as shown in figure. The net force on the loop to the wire will be :

A rigid square loop of side 'a’ and carrying current I_(2) is lying on a horizontal surface near a long current I_(1) carrying wire in the same plane as shown in figure. The net force on the loop due to the wire will be: