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) Using Biot-Savart's law, derive the expression for the magnetic field in the vector form at a point on the axis of a circular current loop. (b) What does a toroid consist of? Find out the expression for the magnetic field inside a toroid for N turns of the coil having the average radius r and carrying a current I. Show the magnetic field in the open space inside and exterior to the toroid is Zero.

Find an expression for the magnetic field at a point on the axis of a circular current loop.

Derive an expresion for the magnetic field at any point on the axis of a circular current loop.

Find an expression for the magnetic field at points on the axis of a circular current loop.

Derive the expression for magnetic field at a point on the axis of a circular current loop.