A-LevelPhysicsElectric fields9702/12 · May/June 2010 · Q261 Mark

Two oppositely-charged parallel plates are arranged as shown. [Figure 26.1] An electron is released from rest from the surface of the negatively-charged plate. The electron travels from the negatively-charged plate towards the positively-charged plate. Which graph shows how the force F on the electron varies with its distance x from the negative plate? [Figure 26.2]

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AGraph A: Force F decreases as distance x increases

BGraph B: Force F increases as distance x increases

CGraph C: Force F increases linearly with distance x

DGraph D: Force F is constant with distance x

✓ Correct answer

D: Graph D: Force F is constant with distance x

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Topic: Electric fields, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2010 Paper 1 Variant 2, question 26.

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