An electric generator works on the principle of electromagnetic induction.

Why is the metallic body of electrical devices connected to the earth wire?

Draw an appropriate schematic diagram showing common domestic circuits and discuss the importance of a fuse. Why is it that a burnt-out fuse should be replaced by another fuse of identical rating?

Name four appliances wherein an electric motor,a rotating device that converts electrical energy to mechanical energy,is used as an important component. In what respect are motors different from generators?

The most important safety method used for protecting home appliances from short circuiting or overloading is

What is meant by the term "magnetic field lines"? List two properties of magnetic field lines.