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

A square conducting loop of side length L carries a current I.The magnetic field at the centre of the loop is (dependence on L)

A square conducting loop of side length L carries a current I.The magnetic field at the centre of the loop is

A square conducting loop of side length L carries a current I.The magnetic field at the centre of the loop is

A wire of length 'I' is bent into a circular loop of radius R and carries a current I. The magnetic field at the centre of the loop is 'B '. The same wire is now bent into a double loop. If both loops carry the same current I and it is in the same direction, the magnetic field at the centre of the double loop will be

A rectangular loop of metallic wire is of length a and breadth b and carries a current i. The magnetic field at the centre of the loop is

A rectangular loop of metallic wire is of length a and breadth b and carries a current i. The magnetic field at the centre of the loop is