Question

At what temperature semiconductors behaves as an ideal insulator?

• A. 273.15 ${}^{\circ }C$
• B. -459.67 ${}^{\circ }F$
• C. -273 ${}^{\circ }F$
• D. Room temperature

Answer 1

The correct option is B -459.67 ${}^{\circ }F$

Semi-conductors behaves as an ideal insulator at absolute zero temperature($0K$) which is 0 Kelvin. Because at the absolute zero temperature the electrons in the valence band of semi-conductors do not posses enough thermal energy to overcome forbidden energy gap. so semi-conductors stop conducting and behaves as an insulator.

But $0K=-459.67F$

Hence correct answer is $-459.67F$.