Question

Which expression defines magnetisation?

Options

• \[M=\frac{\text{volume}}{\text{magnetic moment}}\]

• \[M=\frac{\text{magnetic moment}}{\text{volume}}\]

• \[M=nI\]

• \[M=\mu H\]

Answer 1

Magnetisation is magnetic moment per unit volume. Dividing the magnetic moment by the material's volume gives its magnetisation.