Physics - Magnetism Question with Solution | TestHub

The magnetic permeability of a material is given by $\mu ={\mu }_0(1+\chi )$, where $\chi$ is the magnetic susceptibility.

The relative magnetic permeability is defined as ${\mu }_r=\frac{\mu }{{\mu }_0}$.

Substituting this into the first equation gives ${\mu }_r=1+\chi$.

Rearranging the terms, we get $\chi ={\mu }_r-1$.

Answer: $\chi ={\mu }_r-1$