Physics 9702 · AS & A Level · Potential difference and power

Potential difference and power — practice question

Using energy transfer $W$ and charge $q$, how are potential difference (p.d.) and electromotive force (e.m.f.) defined?

  • Ap.d. $= \frac{W}{q}$, e.m.f. $= \frac{W}{q}$
  • Bp.d. $= \frac{W}{q}$, e.m.f. $= Wq$
  • Cp.d. $= Wq$, e.m.f. $= \frac{W}{q}$
  • Dp.d. $= Wq$, e.m.f. $= Wq$

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