Question

Electrical conductivity of a semiconductor

• A. Decrease with the rise in its temperature
• B. First increases and then decreases with the rise in its temperature
• C. Increase with the rise in its temperature.
• D. Does not change with the rise in temperature.

Hint:

Semiconductors exhibit increased conductivity with rising temperature due to the increased excitation of electrons.

Answer 1

The Correct Option is C

In semiconductors, the electrical conductivity increases with the rise in temperature because more electrons gain enough energy to jump from the valence band to the conduction band, thus enhancing conductivity.