Question

Define conductors and insulators. Give two examples for each.

Answer 1

The materials, which allow electric current to pass through them, are called conductors.Examples are: All metals (copper, silver, iron) are good conductors. Water that usually contains impurities and traces of salt, is also a good conductor. Human body is also a good conductor.

Materials that do not allow electricity to pass through them are called insulators. Insulators oppose electric current and so they are used as a protection from the dangerous effects of electricity. Examples of insulators are glass, air, wood, plastic and rubber.