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GCSE Physics · key term
A thermistor whose resistance decreases as its temperature increases.
Used by Edexcel and OCR
Specification 10.20 · Paper 2
A thermistor for which resistance decreases as temperature increases.
Revise: Thermistor ResistanceFor this course, the thermistors you need to consider are negative temperature coefficient, or NTC, thermistors.
Specification P3.2b · Paper 1 (Foundation), Paper 3 (Higher)
A temperature-dependent resistor whose resistance decreases as its temperature increases.
Revise: Circuit diagramsAn NTC thermistor is a temperature-sensitive resistor. NTC means negative temperature coefficient: as its temperature increases, its resistance decreases. The word NTC matters because not every type of thermistor behaves in this way.
Paper 1, Paper 2
Revise: Sensing Circuits: LDRs and ThermistorsOCR specifies an NTC thermistor.
State both variables and the direction of change: as the temperature of an NTC thermistor increases, its resistance decreases.
State the direction of each sensor response explicitly: an LDR has lower resistance in brighter light; an NTC thermistor has lower resistance at higher temperature.
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