Question

The temperature dependence of resistance of Cu and undoped Si, in the temperature range $300\text{K}\text{to}400\text{K}$, is best described by :

• A. Linear increase for Cu, exponential increase for Si
• B. Linear increase for Cu, exponential decrease for Si
• C. Linear decrease for Cu, linear decrease for Si
• D. Linear increase for Cu, linear increase for Si

Answer 1

The correct option is B Linear increase for Cu, exponential decrease for Si

For conductors (Cu), the resistance increases linearly and for semiconductors (Si), resistance decreases exponentially, in given temperature range.

Hence, ((B)) is the correct answer.