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A-LevelPhysicsElectricity9702/12 · Feb/Mar 2018 · Q341 Mark

A wire of resistance 9.55 Ω has a diameter of 0.280 mm. It is made of metal of resistivity 4.90 × 10⁻⁷ Ω m. What is the length of the wire?

A1.20 m
B4.80 m
C19.0 m
D76.8 m

✓ Correct answer

A: 1.20 m

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About this question

Topic
Electricity, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source
A-Level Physics, Feb/Mar 2018 Paper 1 Variant 2, question 34.

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