The magnetic dipole moment of a bar magnet is directly proportional to volume of the bar magnetic . You are given a bar magnet of length I , magnetic pole strength m and magnetic dipole moment M . What will be the effect on dipole moment and pole strength if the bar magnet is cut into the two equal pieces ?
(i) Along it length ?
(ii) Transverse to its length ?

Explanation

The magnetic moment will become half and yet the pole strength will remain unchanged.