A-LevelPhysicsElectricity9702/12 · May/June 2011 · Q321 Mark

What describes the electric potential difference between two points in a wire that carries a current?

Athe force required to move a unit positive charge between the points

Bthe ratio of the energy dissipated between the points to the current

Cthe ratio of the power dissipated between the points to the current

Dthe ratio of the power dissipated between the points to the charge moved

✓ Correct answer

C: the ratio of the power dissipated between the points to the current

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Topic: Electricity, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2011 Paper 1 Variant 2, question 32.

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