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A-LevelPhysicsD.C. circuitsOct/Nov 2025Paper 1 Q341 Mark

A cell of electromotive force (e.m.f.) E delivers a charge Q to an external circuit. Which statement is correct?

AThe energy dissipated in the external circuit is EQ.
BThe energy dissipated within the cell is EQ.
CThe external resistance is EQ.
DThe total energy dissipated in the cell and the external circuit is EQ.

✓ Correct Answer

The correct answer is D: The total energy dissipated in the cell and the external circuit is EQ.

📋 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 2025 examination, Paper 1 Variant 2.

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