The diagram shows a vertical uniform electric field in a vacuum. [Figure showing vertical electric field lines pointing downwards, and a horizontal beam of electrons flowing from left to right.] An electron gun injects a beam of electrons horizontally into the field. Which changes, if any, have occurred to the path and speed of the electrons by the time the beam leaves the field?
✓ Correct Answer
The correct answer is A: path of electrons: deflected downwards, speed of electrons: increased
📋 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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