The resistivity of different materials is different. The resistance and resistivity of pure metal increase with rising in the absolute temperature of the pure metal, if the temperature coefficient of the metal is (1/273) degrees celsius inverse. The resistivity of alloys is similar to pure metal, that is, it also increases with the rise in temperature, though the increase in the case of alloys is much smaller as compared to pure metals. The resistivity of semiconductors decreases exponentially as the temperature of the material rises. The resistivity of electrolytes also decreases when the temperature of the material rises.