The magnetic induction in air at a distance $d$ from an isolated point pole of strength $m$ unit will be:

$A$ thin rod of length $L$ has magnetic moment $M$ when magnetised. If the rod is bent into a semicircular arc,what is the magnetic moment in the new shape?

If a magnet is cut into four equal parts such that their lengths and breadths are equal,what is the pole strength of each part?

$A$ straight steel wire of length $\ell$ has a magnetic moment $M$. It is bent into an $L$-shape as shown in the figure. The new magnetic moment is

$A$ bar magnet of magnetic moment $3.0 \, A-m^2$ is placed in a uniform magnetic induction field of $2 \times 10^{-5} \, T$. If each pole of the magnet experiences a force of $6 \times 10^{-4} \, N$,the length of the magnet is.....$m$

The magnetism of a magnet is due to