Question

By increasing the temperature, the specific resistance of a conductor _____ and that of a semiconductor _______

• A. Increases for both
• B. Decreases for both
• C. Increases, decreases
• D. Decreases, increases

Answer 1

The correct option is C Increases, decreases

Because specific resistance depends upon value of $\alpha$ the temperature coefficient of the resistance. the value $\alpha$ for conductors is positive and for semiconductors the value of $\alpha$ is negative.

hence By increasing the temperature, the specific resistance of a conductor increases and that of a semiconductor decreases.