Question

The substances having infinitely high electrical resistance are called ___________

Answer 1

1. The rate of flow of electrons in the circuit is called an electric current.
2. The SI unit of current is Ampere.
3. The materials which allow the flow of charges through them are called conductors.
4. Examples of such materials are metals like copper, iron, etc.
5. Insulators do not allow the flow of charges through them.
6. Examples are wood, glass, etc.
7. Insulators have very high resistance.
8. Thus, they do not allow the conduction of current through them.

Hence, the substances having infinitely high electrical resistance are called insulators.