Question

Define Magnetisation of a sample. What is its SI unit?

Answer 1

Magnetisation is a measure of density of induced magnetic dipole moments in a magnetic material. It is mathematically given as-

$M=\frac{dm}{dV}$

Hence, the SI unit of magnetisation is $\frac{\left(J/T\right)}{\left(m^3\right)}$ $=A/m$