Resistivity Temperature
Easyphysics
Resistivity of metals with temperature typically:
Select the correct option:
Solution
Incorrect! Answer:
Increases
For conductors (metals):
- As temperature increases, the positive metal ions vibrate more vigorously.
- This increases the frequency of collisions with drifting electrons.
- More collisions mean a higher resistance to flow, hence resistivity increases. Note: For semiconductors and insulators, resistivity typically decreases with temperature due to increased carrier generation.
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About This Question
- Subject
- physics
- Chapter
- current electricity
- Topic
- resistivity temperature
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Increases
For conductors (metals):
- As temperature increases, the positive metal ions vibrate more vigorously.
- This increases the frequency of collisions with drifting electrons.
- More collisions mean a higher resistance to flow, hence resistivity increases. Note: For semiconductors and insulators, resistivity typically decreases with temperature due to increased carrier generation.
This easy difficulty physics question is from the chapter current electricity, covering the topic of resistivity temperature. It appeared in the 2025 exam.
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