Physics (AS & A Level) · May / June 2025 · Paper 14 · Question 31

The resistance of some electrical components may change with changing conditions. Which component's resistance increases?

1. Aa filament lamp as the potential difference (p.d.) across it increases
2. Ba light-dependent resistor (LDR) as the intensity of the light incident on it increases
3. Ca metallic conductor at constant temperature as the current through it increases
4. Da thermistor as its temperature increases

As printed in the paper