A-LevelPhysicsD.C. circuitsOct/Nov 2022Paper 1 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?

Q: What is the correct answer to this A-Level Physics question?

The correct answer is A: 0.22 W.

Q: What topic does this question test?

This question tests D.C. circuits in A-Level Physics (syllabus code 9702). It is worth 1 mark.

A0.22 W

B0.43 W

C0.64 W

D1.0 W

✓ Correct Answer

The correct answer is A: 0.22 W

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Physics Question

Topic

This multiple-choice question tests D.C. circuits in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2022 examination, Paper 1 Variant 2.

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