A circular coil of 16 turns and radius 10 cm carrying a current of 0.75 A rests with its plane normal to an external field of magnitude `5.0 xx 10^(-2)T.` The coil is free to turn about an axis in its plane perpendicular to the field direction. When the coll is turned slightly and released, it oscillates about its stable equilibrium with a frequency of `2.0 s^(-1).` What is the moment of inertia of the coil about its axis of rotation?

A circular coil of wire consisting of 100 turns, each of radius 4.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil ?

A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?

A circular coil of a wire containing 100 turns each of radius 2cm carries a current of 0.20A. The magnetic field at the centre of the coil is…..

Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of 1 A. What is the magnitude of the magnetic field at the centre of the coil ?

Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of 1 A. What is the magnitude of the magnetic field at the centre of the coil?

Consider a tightly wound 200 turn coil of radius 20 cm, carrying a current of 1A. What is the magnitude of the magnetic field at the centre of the coil ?

A circular coil of radius 4 cm and of 20 turns carries a current of 3 Amperes. It is placed in a magnetic field at intensity of 0.5Wb//m^(2) . What is the magnetic dipole moment of the coil ?

A circular current loop of magnetic moment M is in an arbitary orientation is an external magnetic field vec B . The work done to rotate the loop by 30^@ about an axis perpendicular to its plane is….

(a) A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of 60^@ with the normal of the coil. Calculate the magnitude of the counter torque that must be applied to prevent the coil from turning. (b) Would your answer change, if the circular coil in (a) were replaced by a planar coil of some irregular shape that encloses the same area? (All other particulars are also unaltered.)