Physics - Magnetism Question with Solution | TestHub

The relationship between magnetic susceptibility (${\chi }_m$) and relative permeability (${\mu }_r$) is given by the formula: ${\mu }_r=1+{\chi }_m$. Given the magnetic susceptibility ${\chi }_m=49$. Therefore, the relative permeability ${\mu }_r=1+49=50$. The value of $N$ is 50.