O-LevelPhysicsElectricity5054/12 · Oct/Nov 2016 · Q381 Mark

A resistor of constant resistance and a thermistor are connected in series with a battery. A voltmeter is connected in parallel with the resistor. The temperature falls. What are the correct changes?

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Aresistance of thermistor decreases, voltmeter reading decreases

Bresistance of thermistor decreases, voltmeter reading increases

Cresistance of thermistor increases, voltmeter reading decreases

Dresistance of thermistor increases, voltmeter reading increases

✓ Correct answer

C: resistance of thermistor increases, voltmeter reading decreases

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2016 Paper 1 Variant 2, question 38.

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