Is glass insulator or conductor

Answer 1

Glass is an insulator, as it DOES NOT conduct current. It is a material which has no free electrons available to flow as electrical current.

Conductors, like copper or aluminum, have free electrons, or electrons in the outer shells of their atoms that are easily knocked loose. These electrons flow from negative to positive when an electrical potential (voltage) is applied across the material. We call the flow of electrons "current".

Answer 2

It is a insulator.

The glass does not have free electrons to flow as current, and the air in the tube is also an insulator.

Answer 3

insulator

Answer 4

Conductor