Magnetic lines of force due to a bar magnet do not intersect because

The torque on a bar magnet due to the earth's magnetic field is maximum when the axis of the magnet is

$A$ steel wire of length $\ell$ has a magnetic moment $M$. It is then bent into a semicircular arc. The new magnetic moment is

Two identical thin bar magnets are placed mutually at right angles such that the north pole of one touches the south pole of the other. The length of each bar magnet is $\ell$. The magnitude of the resultant magnetic moment of the system is $[m = \text{pole strength of the magnet}]$.

$A$ permanent magnet:

Write the analogy between electrostatics and magnetism.