A-LevelPhysicsD.C. circuits9702/12 · May/June 2013 · Q381 Mark

In the circuit below, the reading Vₜ on the voltmeter changes from high to low as the temperature of the thermistor changes. The reading Vₗ on the voltmeter changes from high to low as the level of light on the light-dependent resistor (LDR) changes. [Figure showing a circuit with a thermistor, LDR, and two voltmeters Vₜ and Vₗ] The readings Vₜ and Vₗ are both high. What are the conditions of temperature and light level?

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Alow low

Blow high

Chigh low

Dhigh high

✓ Correct answer

C: high low

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2013 Paper 1 Variant 2, question 38.

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