Question

the bulb of a conduction tester lights when it is tested . Is tested material a conductor or an insulator​

Answer 1

Answer:

How do you test if a material is a conductor or insulator?

Conductors and Insulators. 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.