The flow of electricity is called current. Metals are generally very good conductors, meaning they let current flow easily. Materials that do not let current flow easily are called insulators. Most nonmetal materials such as plastic, wood and rubber are insulators.

Is rubber bad conductor of electricity?

Rubber is a good conductor of electricity.

Why is rubber a conductor?

Its lengthy chain-like polymer structure prevents the electrons from moving freely. This is due to the strong bonding of electrons in its valence shell that limits the transfer of electric current. In rare cases, the conductivity of rubber depends on the supporting material(carbon or metallic substances).