Question

Materials which do not allow electric current to flow through them is known as

Answer 1

Insulators

1. Materials which do not allow an electric current to flow through them are known as insulators.
2. The electrons in the insulators are bound to each other so tightly that there are no free electrons for the movement. that's how electricity cannot be passed through them.
3. The thermal conductivity of insulators is very low.
4. The resistivity of insulators is very high.
5. Examples: Rubber, plastics and glass are examples of Insulators.

Hence, The materials which do not allow electricity to pass through them is called as Insulators.