Question:
The resistance of a semiconductor ________.
The resistance of a semiconductor ________.
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Metals: $T \uparrow, R \uparrow$; Semiconductors: $T \uparrow, R \downarrow$.
Updated On: Jun 26, 2026
- increases with increase in temperature
- decreases with increase in temperature
- is independent of temperature
- becomes zero at high temperature
- becomes infinite at high temperature
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Semiconductors have a negative temperature coefficient of resistance.
Step 2: Meaning
As temperature rises, thermal energy allows more electrons to jump from the valence band to the conduction band.
Step 3: Analysis
This increase in charge carriers (electrons and holes) makes the material more conductive.
Step 4: Conclusion
Greater conductivity means the electrical resistance decreases. Final Answer: (B)
Semiconductors have a negative temperature coefficient of resistance.
Step 2: Meaning
As temperature rises, thermal energy allows more electrons to jump from the valence band to the conduction band.
Step 3: Analysis
This increase in charge carriers (electrons and holes) makes the material more conductive.
Step 4: Conclusion
Greater conductivity means the electrical resistance decreases. Final Answer: (B)
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