Moment of inertia of a bar magnet of mass `M`,length `L` and breadth `B` is `I`. Then moment of inertia of another bar magnet with all these values doubled would be

The magnetic moment of bar magnet of length ' "2l and pole strength 'm' is

Define magnetic moment of a bar magnet .

Moment of inertia of a cylindrical shell of mass M, radius R and length L about its geometrical axis would be -

Moment of inertia of a cylindrical shell of mass M, radius R and length L about its geometrical axis would be -

A bar magnet of length l and magnet dipole moment M is bent in the form of an arc. The new magnetic dipole moment is

A short bar magnet having magnetic moment 4 Am^2 , placed in a vibrating magnetometer, vibrates with a time period of 8 s. Another short bar magnet having a magnetic moment 8Am^2 vibrates with a time period of 6 s. If the moment of inertia of the second magnet is 9 xx 10^(-2) kgm^2 , the moment of inertia of the first magnet is (assuming that both magnets are kept in the same uniform magnetic induction field):

The magnetic moment of a bar magnet is equal to the moment of couple when magnet is kept