O-LevelPhysicsElectricity5054/11 · May/June 2022 · Q341 Mark

The diagrams show four circuits. Each circuit contains three 100 Ω resistors. Which circuit has the smallest total resistance?

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Atwo 100 Ω resistors in parallel, in series with another 100 Ω resistor

Bthree 100 Ω resistors in series

Cthree 100 Ω resistors in parallel

Dtwo 100 Ω resistors in series, in parallel with another 100 Ω resistor

✓ Correct answer

C: three 100 Ω resistors in parallel

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2022 Paper 1 Variant 1, question 34.

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