Question

The forbidden energy band gap in conductors, semiconductors and insulators are $EG_{1},EG_{2}$and $EG_{3}$ respectively. The relation among them is.

• A. $EG_{1} = EG_{2} = EG_{3}$
• B. $EG_{1} < EG_{2} < EG_{3}$
• C. $EG_{1} > EG_{2} > EG_{3}$
• D. $EG_{1} < EG_{2} > EG_{3}$

Answer 1

Answer: (B)

$EG_{1} < EG_{2} < EG_{3}$

Answer 2

In insulators, the forbidden energy gap is very large, in case of semiconductor it is moderate and in conductors the energy gap is zero.