Question

If a bar magnet of pole strength m and
magnetic moment Mis cut equally 3
times parallel to its axis and again 5
times perpendicular to its axis then the
pole strength and magnetic moment of
each piece are respectively
​

Answer 1

Answer:

Pole strength of all pieces is same

Magnetic moment of all pieces is M/5

Explanation:

Pole strength depends only on the material of the magnet, and not on the dimensions of magnet

Whereas magnetic moment is given by:-

M=(magnetic length)(pole strength)

=Lxm

Hence the magnetic moment of each piece is given by (l')m where l' us the new length. Hence M=M/5 for all pieces

Hope this answer was helpful