O-LevelPhysicsElectricity5054/11 · May/June 2021 · Q291 Mark

The diagram shows an electrostatic precipitator. It can be used to remove dust from air. What happens at the negative grid?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

ADust particles gain electrons.

BDust particles gain protons.

CDust particles lose electrons.

DDust particles lose protons.

✓ Correct answer

A: Dust particles gain electrons.

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2021 Paper 1 Variant 1, question 29.

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