Question

A magnetising force of $360A{m}^{-1}$ produces a magnetic flux density of $0.6T$ in a ferromagnetic material. The susceptibility of the material is:

• A. $1625$
• B. $1329$
• C. $2105$
• D. $1914$

Answer 1

The correct option is B $1329$

Permeability of material, $\mu =\frac{B}{\mu }=\frac{0.6}{360}=1.67\times {10}^{-3}{T}^{-1}Am$

$\mu ={\mu }_0\left(1+X_m\right)$

$\therefore$ Susceptibility, $X_m=\frac{\mu }{{\mu }_0}-1=\frac{1.67\times {10}^{-3}}{47\times {10}^{-7}}-1=1329$

Hence, Option $B$ is correct.