A-LevelPhysicsElectricityFeb/Mar 2020Paper 1 Q321 Mark
Electrons move in a vacuum from one metal plate to another metal plate. As a result of this, there is an electric current of 48 μA between the two plates. How many electrons are emitted by the first plate in a time of 5.0 minutes?
A1.4 x 1014
B1.5 x 1015
C1.8 × 1016
D9.0 x 1016
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The correct answer is D. This question tests the candidate's understanding of electricity within the Physicssyllabus. The examiner's mark scheme requires...
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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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