A circular coil of radius 10 cm having 100 turns carries a current of 3.2 A. The magnetic field at the center of the coil is

A circular coil of radius 'r' having 'n' turns carries a current 'I' . The magnetic induction at the center of the coil is 'B' . Now the coil is unwound and rewound with half the original radius. If the magnetic induction at the center of the coil is to be the same, the current that should be passed through the coil is

A circular coil of radius 5 cm and has 50 turns carries a current of 3 ampere. The magnetic dipole moment of the coil is

A circular coil of radius 10 cm and 100 turns carries a current 1 A. What is the magnetic moment of the coil ?

A circular coil of radius 10 cm and 100 turns carries a current 1A. What is the magnetic moment of the coil?

A circular coil of 50 turns and radius 0.2 cm carries a current of 12 A. Find magnetic field at the centre of the coil.

A circular coil of radius 10 cm "and" 100 turns carries a current 1A. What is the magnetic moment of the coil?