O-LevelPhysicsElectricity5054/11 · May/June 2015 · Q321 Mark

A 1.0 m length of wire of cross-sectional area 0.40 mm² has a resistance of 2.0 Ω. What is the resistance of a 0.50 m length of wire, of the same material, with a cross-sectional area of 0.80 mm²?

A0.5 Ω

B1.0 Ω

C4.0 Ω

D8.0 Ω

✓ Correct answer

A: 0.5 Ω

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2015 Paper 1 Variant 1, question 32.

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