Question

By increasing the temperature, the specific resistance of a conductor and 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

For metals, specific resistance increases with an increase in temperature because of increased collisions. However, for semiconductors, with an increase in temperature, the number of carriers in the semiconductor material increases which leads to an increase in conductivity of the material. Hence, specific resistance decreases.