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

Potential difference and power — practice question

Which equation linking several of the terms listed below is correct? potential difference (p.d.) $V$ current $I$ resistance $R$ charge $Q$ energy $E$ power $P$ time $t$

  • A$P = \frac{Q^2 R}{t}$
  • B$E R^2 = V^2 t$
  • C$\frac{V I}{P} = t$
  • D$P Q = E I$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI