Electric Conductors and Insulators

Copper wire which is used in the electrical wires is an electrical conductor which is used commonly in our daily life.

Choose the device that is used to determine whether a material is a conductor or an insulator.

A hygrometer is a simple device used to test whether a material is a conductor or an insulator.

What is a conduction tester? Describe the process of making a conduction tester.

What is pure water in relation to electricity?

How can we test to see if a material conducts electricity or not?

Air is a poor conductor of electricity.

Copper is an electrical conductor.

Wood is a _____ substance.

In a conduction tester, as shown below, a plastic scale is placed to complete the circuit for the bulb to glow.

Which of these properties of plastic is the main reason for their wide usage in electrical appliances?

State whether jute fibre is a conductor or an insulator.

Write the names of four electrical equipments which are used in daily life. 

Which of these is an insulator? [graphite / wood / copper]

One is more likely to get a shock upon touching an electrical appliance with wet hands than with dry hands.

Why are electric wires covered with plastic?

Switches, plugs and sockets are made up of

Which of the following is insulator?

Select if the following action is safe or unsafe.

Your sister, who is not wearing any footwear, climbs onto a metal stool to replace a light bulb in the wall lamp.

Lightning is caused by