According to Curie's law,the magnetic susceptibility of a substance at an absolute temperature $T$ is proportional to

The value of aluminium susceptibility is $2.2 \times 10^{-5}$. The percentage increase in the magnetic field if space within a current-carrying toroid is filled with aluminium is $\frac{x}{10^{4}}$. Then the value of $x$ is ...... .

The magnetic moment produced in a sample of $2 \text{ g}$ is $8 \times 10^{-7} \text{ A} \cdot \text{m}^2$. If its density is $4 \text{ g/cm}^3$, then the magnetization of the sample is: (in $\text{ A/m}$)

The magnetic susceptibility of a material of a rod is $349$ and the permeability of vacuum $\mu_0$ is $4 \pi \times 10^{-7} \ SI$ units. The absolute permeability of the material of the rod in $SI$ units is:

$A$ rod of ferromagnetic material with dimensions $10 \, cm \times 0.5 \, cm \times 0.2 \, cm$ is placed in a magnetic field of strength $0.5 \times 10^4 \, A/m$. As a result,a magnetic moment of $5 \, A \cdot m^2$ is produced in the rod. The value of the total magnetic induction will be (in $Tesla$):

Define magnetisation $(M)$ and give its unit and dimension.