What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.

A magnet always has___ poles.

The materials which are attracted towards a magnet are called___ .

How many types of electric circuit are there? Define them.

What is electric circuit?

If you touch an electric wire carrying current you get a shock, but if on the same wire the birds sit they do not get any shock/current. Explain why?

The headlights of a car have reflectors behind the bulb. What is the function of reflectors?

In any electric circuit, when the switch is on and the current flows through it why do the wire, switches, bulb or devices become hot?

Give one activity to prove that air is an insulator.

Name the scientist who invented electric cell and the scientist who invented electric bulb.

Identify conductors and insulators from the following:Eraser, paper, matchstick, copper wire, pencil lead, polythene