Find out the expression for the magnetic field at a point on the axis of a toroid of N turns having average redius r and carrying a corrent I . Show that the magnetic field in the open space inside and outside the toroid is zero.

What does a toroid consist of ? Find out the expression for the magnetic field inside a toriod for N turns of the coil having an average radius r and carrying current I. show that the magnetic field in the open space inside and outside the torroid is zero.

Find the magnetic field at the point of intersection of the diagonals of a square having sides a and carrying current I.

The magnetic field at the point of intersection of diagonals of a square wire loop of side L carrying a current I is

The magnetic field at the point of intersection of diagonals of a square wire loop of side L carrying a current I is

Using Bio-Savart law determine the magnetic field at any point on the axis of a current carrying circular loop.

Using Biot-Svart's law, derive the expression for the magnetic field in vector form at a point on the axis of a circular current loop.

A rectangular loop of metallic wire is of length a and breadth b and carries a current I. Find the magnitude of the magnetic field at the centre O of the loop.

The magnetic field B within a solenoid of length L with N turns and carrying a current I is given by

Each side of a hexagonal loop of a metal wire is a. The loop carries a current I. Find the magnitude of the magnetic field at the centre of the loop