Two large parallel metal plates X and Y are situated in a vacuum as shown. [Diagram] Plates X and Y carry equal and opposite charges. What happens to the force on a positively charged particle as it moves from plate X to plate Y?
✓ Correct Answer
The correct answer is D: It remains constant because the positively charged particle is in the uniform electric field between the plates.
📋 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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