O-LevelPhysicsElectricity5054/12 · May/June 2016 · Q351 Mark

The diagram represents thermionic emission from a metal filament. The particles are attracted by a charged plate. Which row shows the charge on the plate, and the temperature of the metal filament?

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.

Anegative, high

Bnegative, low

Cpositive, high

Dpositive, low

✓ Correct answer

C: positive, high

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2016 Paper 1 Variant 2, question 35.

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