A-LevelPhysicsD.C. circuits9702/12 · Oct/Nov 2022 · Q351 Mark

The diagram shows a cell of electromotive force (e.m.f.) 3.0V and internal resistance 4.7Ω connected across a lamp. The lamp has a resistance of 9.3 Ω. [Figure showing a circuit with a cell, internal resistance, and a lamp] What is the power dissipated by the internal resistance of the cell?

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A0.22 W

B0.43 W

C0.64 W

D1.0 W

✓ Correct answer

A: 0.22 W

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2022 Paper 1 Variant 2, question 35.

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