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ECE · Q138

Electronic Devices And Circuits

Engineering and GATE · ECE · question 138

Q138

The electron and hole concentrations, n and p respectively obey the relation np = n2i where ni is the intrinsic carrier density. This expression is valid for which of the following?

A.
For all semiconductors under any condition
B.
For direct band gap semiconductor only
C.
For non-degenerate semiconductor under thermal equilibrium condition
Answer
D.
For degenerate semiconductors having excess electrons and holes

Answer: Option C

Solution

Answer: Option C
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