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A-LevelPhysicsD.C. circuits9702/12 · May/June 2023 · Q311 Mark

A resistor of resistance R is connected across a cell of electromotive force (e.m.f.) E and negligible internal resistance. Which single change to the circuit would lead to the largest increase in the power dissipated in the resistor?

Adoubling the value of E

Bdoubling the value of R

Chalving the value of E

Dhalving the value of R

✓ Correct answer

A: doubling the value of E

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About this question

Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2023 Paper 1 Variant 2, question 31.

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