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 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

What will be magnetic field at centre of current carrying circular loop of radius R?

What will be magnetic field at centre of current carrying circular loop of radius R?

A circular loop of radius 9.7 cm carries a current 2.3 A. Obtain the magnitude of the magnetic field at the centre of the loop .

A long straight conductor carrying a current i is bent to form an almost complete circular loop of radius r on it. The magnetic field at the centre of the loop

On meter length of wires carriers a constant current. The wire is bent to from a circular loop. The magnetic field at the centre of this loop is B . The same is now bent to form a circular loop of smaller radius to have four turns in the loop. The magnetic field at the centre of this loop B . The same is now bent to form a circular loop of smaller radius of have four turns in the loop. The magnetic field at the centre of this new loop is