A-LevelPhysicsElectric fieldsOct/Nov 2021Paper 1 Q321 Mark
A proton enters the uniform electric field between two parallel vertical metal plates in a vacuum. One plate is at a potential of 0 V and the other plate is at a potential of +10 V, as shown. [Figure 32.1] What is the initial change in the motion of the proton caused by the electric field, immediately after the proton enters the field?
AIt begins to move downwards.
BIt begins to move upwards.
CIts speed decreases.
DIts speed increases.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of electric fields within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
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