$A$ current-carrying wire produces:

Draw a labelled circuit diagram of a simple electric motor and explain its working. In what way are these simple electric motors different from commercial motors?

Mention the voltage and frequency of the electric current that we receive in our houses.

On which principle does an electric bell work?

The material of the core of a strong electromagnet is:

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?