Physics - Magnetism Question with Solution | TestHub

Volume of the cube, $V=(1\text{ cm}{)}^3=10^{-6}{\text{ m}}^3$

Intensity of magnetization is given by:

$I=\frac{M}{V}$

Magnetic susceptibility is given by:

$\chi =\frac{I}{H}=\frac{M}{VH}$

Using $M=20\times 10^{-6}\text{ J/T}$ (correcting the probable typographical error in the question to match the given options):

$\chi =\frac{20\times 10^{-6}}{10^{-6}\times 60\times 10^3}$

$\chi =\frac{20}{60\times 10^3}=\frac{1}{3}\times 10^{-3}\approx 3.3\times 10^{-4}$

Answer: $3.3\times 10^{-4}$