Physics A-Level
Temperature dependence of resistivity
What Temperature dependence of resistivity means in Physics A-Level, as defined for OCR.
Definition of Temperature dependence of resistivity
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Reference: OCR
In a metal, increasing temperature makes the lattice ions vibrate more, so conduction electrons collide more often and resistivity increases; in a semiconductor, increasing temperature releases more charge carriers, so resistivity falls.
Topics that use Temperature dependence of resistivity
- Resistivity (OCR A-Level)
Related terms
- Charge-carrier release in semiconductors
- Choice of measuring instruments
- Experimental determination of resistivity
- Graphical interpretation of ρ against T
- Microscopic model of conduction in metals
- ntc thermistor
- Resistivity
- Semiconductor charge-carrier model
Using Temperature dependence of resistivity in the exam
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