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Q. The magnetic induction and magnetising field intensity in a sample of magnetic material are $B$ and $H$ respectively. The magnetic susceptibility of the material is

Magnetism and Matter

Solution:

$B=\mu_{0}(I+H)$
$B=\mu_{0}\left(x_{m} H+H\right)$
$X_{m}=\frac{B}{\mu_{0} H}-1$