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, linear increase for Si

(b) linear increase for Cu, exponential increase for Si

(c) linear increase for Cu, exponential decrease for Si

(d) linear decrease for Cu, linear decrease for Si

Answer 1

Correct Option(c) linear increase for Cu, exponential decrease for Si

Explanation:

As we know Cu is a conductor, so increase in temperature, resistance will increase. Then, Si is a semiconductor, so with an increase in temperature, resistance will decrease.