A-LevelPhysicsElectricity9702/12 · May/June 2010 · Q311 Mark

In terms of energy transfer W and charge q, what are the definitions of potential difference (p.d.) and electromotive force (e.m.f.)?

Ap.d.: W/q, e.m.f.: W/q

Bp.d.: W/q, e.m.f.: Wq

Cp.d.: Wq, e.m.f.: W/q

Dp.d.: Wq, e.m.f.: Wq

✓ Correct answer

A: p.d.: W/q, e.m.f.: W/q

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Topic: Electricity, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2010 Paper 1 Variant 2, question 31.

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