O-LevelPhysicsElectricity5054/11 · Oct/Nov 2021 · Q321 Mark

Two 100 W lamps are connected in parallel to the mains supply, as shown. How much electrical energy is supplied by the mains when the switch is closed for 36 minutes?

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A0.030 kWh

B0.060 kWh

C0.12 kWh

D7.2 kWh

✓ Correct answer

C: 0.12 kWh

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2021 Paper 1 Variant 1, question 32.

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