Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

Which equation is correct for resistance $R$, potential difference (p.d.) $V$ and current $I$?

  • A$R = \frac{V}{I}$
  • B$R = V + I$
  • C$R = \frac{I}{V}$
  • D$R = V \times I$

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