The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber does not conduct electricity?

Asked by aditigandhe | 26th May, 2012, 10:13: PM

Expert Answer:

The main property shared by conductors is that the atoms that make up the material have some loose electrons on the outside (called conduction bands); where the electrons can move from one atom to the next. Electrical current is the movement of electrons in a conductor. If a material lacks these free electrons (also called conducting electrons)—as rubber does—it will not conduct electricity and is called an insulator.

Answered by  | 28th May, 2012, 06:51: AM

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