Question

An intrinsic semiconductor at the absolute zero temperature ________.

• A. behaves like a metallic conductor
• B. behaves like an insulator
• C. has a large number of holes
• D. has a large number of electrons

Answer 1

The correct option is B behaves like an insulator

An intrinsic semiconductor at 0 K, has electrons only in the valence band. Forbidden gap - 3 eV, as a result, electrons do not have sufficient energy to excite to the conduction band. Since there are no electrons in the conduction band, so it behaves as an insulator at 0 K.