The magnetic moment of a magnet of dimensions `4 cm ** 2 cm ** 1.25 cm ` is `3 Am^(2)` what is the intensity of magnetisation ?

Explanation

Magnetic moment of a magnet, `m=3Am^(2)`
Dimension of magnet, `V=5xx2.5xx1.25cm^(3)`.
Magnetization, `I=(M)/(V)`
`=(3)/(5xx2.5xx1.25xx10^(-6))`
`=192000`
`=1.92xx10^(5)Å//m`.