O-LevelPhysicsElectricity5054/12 · Oct/Nov 2015 · Q381 Mark

In the circuit shown, all lamps are identical. Lamp P lights with normal brightness. Switch Y is closed and lamps come on. Which row indicates the brightness of the lamps?

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AP dim, Q dim, R dim

BP normal, Q dim, R dim

CP normal, Q off, R off

DP off, Q normal, R normal

✓ Correct answer

B: P normal, Q dim, R dim

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2015 Paper 1 Variant 2, question 38.

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