A long straight cylindrical hollow pipe has inner and outer radii 1 cm and 2 cm respectively. It carries a current 100 A. Calculate the magnetic field at distance (a) 0.5 cm, (b) 1.5 cm and (c) 4 cm from the axis of pipe.

A toroidal coil has 3000 turns. The inner and outer radii are 10 cm and 12 cm respectively. If current flowing is 5 A, then the magnetic field inside the toroid will be

A toroidal coil has 3000 turns. The inner and outer radii are 10 cm and 12 cm respectively. If current flowing is 5 A, then the magnetic field inside the toroid will be

A very long straight wire carries a current 5.2A. What is the magnitude of the magnetic field at a distance 3.1 cm from the wire?

A circular coil of 5 cm radius, number of turns 100 carries a current of 2A. Calculate the magnetic field (a) At the centre of the coil (b) At a distance 10cm from the centre along the axis of the coil

Calculate the magnetic field at a distance of 5 cm from an infinite straight conductor carrying a current of 10 A.

Two straight parallel wires A and B, cach 20 cm long are separated by 10 cm. They carry 20 A and 30 A current respectively in opposite directions. Calculate the magnetic field at (ii) the point 5 cm from A and 15 cm from B on the line joining them.

A hollow cylindrical pipe is 21dm long.It outer and inner diameters are 10cm and 6cm respectively.Find the volume of the copper used in making the pipe.

Calculate the value of magnetic field at a distance of 2 cm from a very long straight wire carrying a current 5 A