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

Two magnets,each of magnetic moment $M$,are placed so as to form a cross at right angles to each other. The magnetic moment of the system will be

What does the analogy of a bar magnet's and a solenoid's magnetic field lines suggest?

$A$ magnetised wire of magnetic moment $3.14 \, A-m^2$ is bent in the form of a semi-circle. The new magnetic moment will be.....$A-m^2$

If a magnet of pole strength $m$ is divided into four parts such that the length and width of each part is half that of the initial one,then the pole strength of each part will be

$A$ steel wire has a magnetic moment $M$. What will be its magnetic moment if it is bent into a semi-circular arc?