JEE Mains · Physics · STD 12 - 14. Semicondutor electronics
The effect of increase in temperature on the number of electrons in conduction band \(\left( n _{ e }\right)\) and resistance of a semiconductor will be as:
- A Both \(n_e\) and resistance decrease
- B Both \(n _{ e }\) and resistance increase
- C \(n _{ e }\) increases, resistance decreases
- D \(n _{ e }\) decreases, resistance increases
Answer & Solution
Correct Answer
(C) \(n _{ e }\) increases, resistance decreases
Step-by-step Solution
Detailed explanation
As temperature increases, more electron excite to conduction band and hence conductivity increases, therefore resistance decreases.
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