<Dl> <Dd> R 0 = R (T 0) (\ displaystyle R_ (0) = R (T_ (0))) </Dd> </Dl> <Dd> R 0 = R (T 0) (\ displaystyle R_ (0) = R (T_ (0))) </Dd> <P> And α (\ displaystyle \ alpha) is independent of T (\ displaystyle T). </P> <P> Integrating the temperature coefficient differential law: </P>

Semi-conductors generally have a negative temperature coefficient of resistivity