Question

how are materials Classified on the basis of resistivity

Answer 1

Classification of Material onBasis of Resistivity. Substancesshowing very low resistivities Thesubstances which show very lowresistivities allow the flow of electric current through them. ... The substances which do not allow electricity to pass through them are called insulators.

Answer 2

The resistivity differs from substance to substance.

All substances can be classified on the basis of their resistivities :-

1. Substances showing very low resistivities = The material that exhibits very low resistivities allows electrical current to pass through them. So, the very low-resistivity compounds are called conductors.

2. Substances showing moderate resistivities = Substances with moderate resitivities give substantial resistance to the flow through them of electrical current. Such material therefore called resistors.

3. Substances having high resistivity = The substances that have very high resistivities do not allow the flow of electricity through them. The material that does not allow the passage of electricity through them is called insulators.