A-LevelPhysicsElectric fields9702/12 · Feb/Mar 2018 · Q121 Mark

A charged oil drop is held stationary between two charged parallel plates. [Figure 12.1] Which forces act on the oil drop?

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Aboth electric and gravitational

Belectric only

Cgravitational only

Dneither electric nor gravitational

✓ Correct answer

A: both electric and gravitational

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Topic: Electric fields, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Feb/Mar 2018 Paper 1 Variant 2, question 12.

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