A-LevelPhysicsElectricityFeb/Mar 2024Paper 1 Q371 Mark

The charge carriers in a metal wire are free electrons. Which statement about the charge of each free electron is correct?

Q: What topic does this question test?

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

AThe magnitude of the charge increases with the potential difference across the wire.

BThe magnitude of the charge is zero unless there is a potential difference across the wire.

CThe sign and magnitude of the charge do not depend on the potential difference across the wire.

DThe sign of the charge depends on the potential difference across the wire.

✓ Correct Answer

The correct answer is C: The sign and magnitude of the charge do not depend on the potential difference across the wire.

📋 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 Electricity in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Feb/Mar 2024 examination, Paper 1 Variant 2.

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