How do the electrical conductivity and resistivity and resistivity of the following classes of materials vary with temperature ? Semiconductors, metallic conductors, superconductors.

How do the electrical conductivity and resistivity and resistivity of

1.	How do the electrical conductivity and resistivity and resistivity of the following classes of materials vary with temperature ? Semiconductors, metallic conductors, superconductors.
Answer» SOLUTION :With increase of temperature, electrical CONDUCTIVITY of semiconductors INCREASES, that of metallic conductors and superconductors DECREASES. Electrical resistivity , being the reciprocal of conductivity, has the OPPOSITE behaviour.