Question

An iron rod of susceptibility $599$ is subjected to a magnetising field of $1200{\text{Am}}^{-1}$. The relative permeability of the material of the rod is

• A. $599$
• B. $600$
• C. $2.4\pi \times {10}^{-5}$
• D. $4\pi \times {10}^{-7}$

Answer 1

The correct option is B $600$

${\mu }_r=1+{\chi }_m$

${\mu }_r=1+599=600$