Question:
The magnetic susceptibility of a material of a rod is 499 . Permeability in vacuum is $4 \pi \times 10^{-7} \mathrm{H} / \mathrm{m}$. Absolute permeability of the material of the rod is :
Correct Option: , 2
Solution:
$\mu=\mu_{0}\left(1+x_{m}\right)$
$=4 \pi \times 10^{-7} \times 500$
$=2 \pi \times 10^{-4} \mathrm{H} / \mathrm{m}$
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