For an isotropic medium,$B$,$\mu_0$,$H$,and $M$ are related as (where $B$,$\mu_0$,$H$,and $M$ have their usual meanings in the context of magnetic materials):

$A$ bar magnet has length $4 \text{ cm}$,cross-sectional area $2 \text{ cm}^2$ and magnetic moment $6 \text{ Am}^2$. The intensity of magnetisation of the bar magnet is

The magnetization of a bar magnet of length $5 \ cm$,cross-sectional area $2 \ cm^2$ and net magnetic moment $1 \ A \cdot m^2$ is:

The space inside a straight current-carrying solenoid is filled with a magnetic material having magnetic susceptibility equal to $1.2 \times 10^{-5}$. What is the fractional increase in the magnetic field inside the solenoid with respect to the magnetic field when air is the medium inside the solenoid?

The magnetic moment produced in a substance of $1 \ gm$ is $6 \times 10^{-7} \ A \cdot m^2$. If its density is $5 \ gm/cm^3$,then the intensity of magnetization (in $A/m$) will be:

An iron rod is placed parallel to a magnetic field intensity of $1000 \text{ A/m}$. The magnetic flux through the rod is $3 \times 10^{-4} \text{ Wb}$ and its cross-sectional area is $1.5 \text{ cm}^2$. The magnetic permeability of the rod in $\text{Wb/(A} \cdot \text{m)}$ is: