To find the direction of the magnetic field around a current-carrying conductor,we use Fleming's left-hand rule.

Why is pure iron not used for making permanent magnets? Name one material used for making permanent magnets. Describe how permanent magnets are made electrically. State two examples of electrical instruments made by using permanent magnets.

State Faraday's second law of electromagnetic induction.

An electric generator works on the principle of electromagnetic induction.

The magnetic field produced by a straight current-carrying conductor is in the form of concentric circles.

What is the nature of the magnetic field produced by a current-carrying circular coil? Explain with the help of an experiment.