A-LevelPhysicsElectricity9702/12 · Feb/Mar 2016 · Q321 Mark

Which measurements are taken in order to calculate the resistivity of the metal of a piece of wire?

Ap.d., current, area, length

Bp.d., current, diameter, length

Cresistance, area, length

Dresistance, length, radius

✓ Correct answer

B: p.d., current, diameter, length

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Topic: Electricity, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Feb/Mar 2016 Paper 1 Variant 2, question 32.

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