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A-LevelPhysicsElectric fieldsFeb/Mar 2018Paper 1 Q311 Mark

Which statement about electric charges in a uniform electric field is not correct?

AElectric charges of the same magnitude, whether positive or negative, experience the same magnitude of force when placed in the same uniform electric field.
BThe direction of the force on a positive charge placed in a uniform electric field is independent of the magnitude of the charge.
CThe magnitude of the force on a positive charge placed in a uniform electric field is proportional to the magnitude of the electric field strength.
DThe work done to move a positive charge a certain distance in a uniform electric field is independent of the direction of the movement.

✓ Correct Answer

The correct answer is D: The work done to move a positive charge a certain distance in a uniform electric field is independent of the direction of the movement.

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

Source

This question appeared in the Cambridge A-Level Physics Feb/Mar 2018 examination, Paper 1 Variant 2.

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