An electrical conductor is a substance through which electrical current flows with small resistance. Metals are generally excellent electrical conductors. In the language of solid state physics, the electrons in conductors lie in a so-called "conduction band" that is directly on top of a so-called "valence band." Resistance increases with increasing temperature in conductors.

Electrical Conductance, Electrical Conductivity, Electricity, Faraday Cage, Insulator, Metal, Semiconductor, Wiener Criterion