Two poles of a horse shoe magnet each of pole strength 2 Am are 8 cm apart. Find the magnetic field intensity at the midpoint of the line joining the poles.

SI unit of magnetic pole strength is

The distance between the poles of a horse shoe magnet is 0.1 m and its pole strength is 0.01 amp-m. The induction of magnetic field at a point midway between the poles will be

A long bar magnet has a pole strength of 10 Am . Find the magnetic field at a point on the axis of the magnet at a distance of 5cm from the north pole of the magnet.

Two poles of height a metres and b metres are p metres apart. Prove that the height of the point of intersection of the lines joining the top of each pole to the foot of the opposite pole is given by (a b)/(a+b) metres.

Two like mangetic poles of strength 10 and 40 SI units are separated by a distance 30cm. The intensity of magnetic field is zero on the line joining them

Two identical thin bar magnets, each of length L and pole strength m are placed at right angles to each other, with the N pole of one touching the S-pole of the other. Find the magnetic moment of the system.

A bar magnet of pole strength 10A-m is cut into two equal parts breathwise. The pole strength of each magnet is

The pole piece of a horse shoe magnet are made cylindrical so that the deflection of the

Two like magnetic poles :

Two point charges Q_1 = 400 muC and Q_2 = 100 muC are kept fixed, 60 cm apart in vacuum. Find intensity of the electric field at midpoint of the line joining Q_1 and Q_2 .