Question

Energy band gap between valence band and conduction band for semiconductor is:

• A. approximately 1 eV
• B. less than conductors
• C. equal to conductors
• D. more than insulator

Answer 1

The correct option is A approximately 1 eV

A semiconductor acts an insulator at very low temperatures and gradually begins conducting as the temperature increases. This means that as the temperature increases, the valence electrons gain enough energy to jump from the valence band to the conduction band. The band gap in semiconductor is very low, must be approximately 1eV.