Question

The magnetic susceptibility of a material of a rod is 499 . Permeability in vacuum is $4 \pi \times 10^{-7} H / m$. Absolute permeability of the material of the rod is :

• A. $4 \pi \times 10^{-4} H / m$
• B. $2 \pi \times 10^{-4} H / m$
• C. $3 \pi \times 10^{-4} H / m$
• D. $\pi \times 10^{-4} H / m$

Answer 1

Answer: (B)

$\mu=\mu_{0}\left(1+x_{m}\right)$
$=4 \pi \times 10^{-7} \times 500$
$=2 \pi \times 10^{-4} H / m$