Draw the lines of force of the magnetic field through and around
single loop of wire carrying electric current.

Using Ampere's circuital theorem, calculate the magnetic field due to an infinitely long wire carrying current I.

State the Biot-Savart's law for the magnetic field due to a current carrying element. Use this law to obtain a formula for magnetic field at athe centre of circular loop of radius r carrying steady current I . Sketch the magnetic field lines for a current loop clearly indicating the direction of the field.

Draw lines of force to represent a uniform electric field?

The magnetic lines of force around an infinitely long conductor carrying current are:

On what factors does the magnitude of magnitude of magnetic field at the centre of a current carrying circular wire depends.