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O-LevelPhysicsElectricity5054/12 · Oct/Nov 2017 · Q301 Mark

A piece of wire has a resistance of 16Ω. The wire is 20 cm long and has a cross-sectional area of 2.0 mm². Which wire of the same material has a resistance of 8.0Ω?

A10, 1.0

B10, 4.0

C20, 1.0

D20, 4.0

✓ Correct answer

D: 20, 4.0

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About this question

Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2017 Paper 1 Variant 2, question 30.

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