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JEE Main Physics Class 12 Electronic Devices Part 2 Questions
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© examsnet.com
Question : 42
Total: 111
The effect of increase in temperature on the number of electrons in conduction band
(
n
e
)
and resistance of a semiconductor will be as:
[31-Jan-2023 Shift 1]
Both
n
e
and resistance decrease
Both
n
e
and resistance increase
n
e
increases, resistance decreases
n
e
decreases, resistance increases
Validate
Solution:
As temperature increases, more electron excite to conduction band and hence conductivity increases, therefore resistance decreases.
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