How do we decide that a given material is a good conductor of electric

1.	How do we decide that a given material is a good conductor of electricity or is an insulator?
Answer» A material which has very low electrical resistance is called a good conductor of electricity. Examples: silver, copper, aluminium. A material which has extremely high electrical resistance is called an insulator of electricity. Examples: rubber, wood, glass.

How do we decide that a given material is a good conductor of electricity or is an insulator?

Answer»

A material which has very low electrical resistance is called a good conductor of electricity.

Examples: silver, copper, aluminium.

A material which has extremely high electrical resistance is called an insulator of electricity.

Examples: rubber, wood, glass.