Why does the electrical conductivity of semi-conductors increase with rise in temperature ?

why does the electrical conductivity of semiconductors increse with rise in temperature?

Why does the conductivity of a pure semiconductor increases with rise in temperature ?

Why is the electrical conductivity of metals found to decrease with rise in temperature?

STATEMENT -1 : Electrical consuctivity of semi -conductors incresase with increasing temperature . STATEMENT -2: With increase in temperature , number of electrons which jumps from the valence bond to the conduction band in semi-condctors increase .

How does the electrical conductivity of super- conductors vary with temperature ?

(a) On raising the temperature, electrical conductivity of a metal decreases, while that of a semiconductor increases. Explain. (b) At very low temperature (0K), intrinsic semiconductors behave like insulators but their electrical conductivities increase with rise in temperature. Why?

Why does the electrical conductivity of germanium crystal increase when it is doped with gallium?

The electrical conductivity of a metal decreases with rise in temperature while that of semi-conductor increases. Justify.

Why does the concentration of OH^(-) ions in pure water increase with rise in temperature ? Does this increase make pure water alkaline ? Explain.

How does the conductance of a semiconducting material change with rise in temperature?