[" A current carrying wire AB of the length "2 pi R" is turned along a circle,as shown in figure.The magreticile "],[" the centre "O" ."]

A current carrying wire AB of the length L is turned along a circle, as shown in figure. The magnetic field at the centre O.

A current carrying wire AB of the length L is turned along a circle, as shown in figure. The magnetic field at the centre O.

A current carrying wire AB of the length L is turned along a circle, as shown in figure. The magnetic field at the centre O.

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is :

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is

A long wire carrying current 'I' is bent into the shape as shown in the figure. The net magnetic field intensity at the centre 'O' is

A long wire carrying current 'I' is bent into the shape as shown in the figure. The net magnetic field intensity at the centre 'O' is