Question

what are insulator? ​

Answer 1

a substance which does not readily allow the passage of heat or sound.

Answer 2

Answer:

Explanation: In case of heat, insulator is a substance which does not readily allow the passage of heat or sound.

In case of electricity, insulator is a a substance or device which does not  conduct electricity.

In case of physics, a block of glass, ceramic, or other insulating material enclosing a wire carrying an electric current where it crosses a support.