A-LevelPhysicsD.C. circuits9702/12 · Oct/Nov 2020 · Q381 Mark

A voltmeter is connected into a circuit with the polarity shown in the diagram. [Figure 38.1] The sliding contact is moved to end P of the potentiometer and then to end Q. What are the two readings of the voltmeter?

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Asliding contact at end P: 0 V, sliding contact at end Q: 3 V

Bsliding contact at end P: 0 V, sliding contact at end Q: 6 V

Csliding contact at end P: 3 V, sliding contact at end Q: 3 V

Dsliding contact at end P: 3 V, sliding contact at end Q: 6 V

✓ Correct answer

D: sliding contact at end P: 3 V, sliding contact at end Q: 6 V

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2020 Paper 1 Variant 2, question 38.

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