The magnetic induction B and the force F on a pole m are related by

The magnetic induction in the region between the pole faces of an electromagnet is 0.7 weber/m 2. The induced e.m.f. in a straight conductor 10 cm long, perpendicular to B and moving perpendicular both to magnetic induction and its own length with a velocity 2 m/sec is

The magnetic induction in the region between the pole faces of an electromagnet is 0.7 weber/m 2. The induced e.m.f. in a straight conductor 10 cm long, perpendicular to B and moving perpendicular both to magnetic induction and its own length with a velocity 2 m/sec is

A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by each pole of the magnet, the length of the magnet will be

A bar magnet of magnetic moment M is placed at right angles to magnetic induction B. If a force F is experience by each pole of the magnet, the length of the magnet will be

The magnetic induction at a distance 'd' form the magnetic pole of unkown strength 'm' is B . If an identical pole is now placed at a distance of 2d from the first pole, the force between the two poles is

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

The magnetic induction at distance of 0.1m from a strong magnetic pole of strength 1200 Am is