A-LevelPhysicsD.C. circuits9702/12 · May/June 2022 · Q331 Mark

The intensity of light incident on a light-dependent resistor (LDR) is increased. The temperature of a thermistor is increased. In each case, the current in the component is maintained at a constant value. What happens to the potential difference across each component?

ALDR: increases, thermistor: increases

BLDR: increases, thermistor: decreases

CLDR: decreases, thermistor: increases

DLDR: decreases, thermistor: decreases

✓ Correct answer

D: LDR: decreases, thermistor: decreases

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2022 Paper 1 Variant 2, question 33.

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