Question
The temperature dependence of resistances of $$Cu$$ and undoped $$Si$$ in the temperature range $$300 - 400\,K,$$ is best described by :
A.
Linear increase for $$Cu,$$ exponential decrease of $$Si.$$
B.
Linear decrease for $$Cu,$$ linear decrease for $$Si.$$
C.
Linear increase for $$Cu,$$ linear increase for $$Si.$$
D.
Linear increase for $$Cu,$$ exponential increase for $$Si.$$
Answer :
Linear increase for $$Cu,$$ exponential decrease of $$Si.$$
Solution :
