At the time of short circuit, the current in the circuit:

The device used for producing electric current is called a:

The essential difference between an AC generator and a DC generator is that:

State whether the following statements are true or false:

(a) An electric motor converts mechanical energy into electrical energy.

(b) An electric generator works on the principle of electromagnetic induction

(c) The field at the centre of a long circular coil carrying current will be parallel straight lines

(d) A wire with a green insulation is usually the live wire of an electric supply

List three sources of magnetic fields.