Question

Choose the correct statement.

• A. When we heat a semiconductor its resistance increases
• B. When we heat a semiconductor Its resistance is decreases
• C. When we cod a semiconductor to 0 K. then It becames superconductor
• D. Resistance of a semiconductor is independent of temperature

Answer 1

The correct option is B When we heat a semiconductor Its resistance is decreases

With rise in temperature, more and more electron from valance band jump into the conduction band which conduct electric current in semiconductor. So conductivity of semiconductor increases with rise in temperature while resistance decreases.