OCR GCSE Physics A · J249
Specification P3.2f, P3.2h · Paper 1 (Foundation), Paper 3 (Higher)
Revise: Circuit design for resistance effectsFor an NTC thermistor, change its temperature rather than merely turning up the supply. Place it in water whose temperature can be measured with a thermometer; take current and potential-difference readings at a range of temperatures. Its resistance falls as temperature rises.
- Revise: Relating graphs to component properties
A temperature-sensitive resistor whose resistance falls as its temperature rises.