Question

How do we decide tht a given mterial is a good conductor of electricity or is an insultor

Answer 1

Answer:

it depend on the reitance of a material. if a material put small resistance to the flow of current, the material is good conductor. If a materials has very high restance and completely stops the flow of current, it is insulator.

Explanation:

Answer 2

In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them. ... Most atoms hold on to their electrons tightly and are insulators