Find mutual inductance if we have a square loop of side r instead of a small circular loop of side r at the centre of bigger circular loop.

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

Find the mutual inductance between the circular coil and the loop shown in figure.

In the figure, the current l enters the circular loop of uniform wire of radius r at A and leaves it at B. The magnetic field of the centre of circular loop is

In the figure, the current l enters the circular loop of uniform wire of radius r at A and leaves it at B. The magnetic field of the centre of circular loop is

A square conducting loop of side L is situated in gravity free space. A small conducting circular loop of radius r (rlt lt L) is placed at the center of the square loop, with its plane perpendicular to the plane of the square loop. The mutual inductance of the two coils is

A square conducting loop of side L is situated in gravity free space. A small conducting circular loop of redius r (rlt lt L) is placed at the center of the square loop, with its plane perpendicular to the plane of the square loop. The mutual inductance of the two coils is