Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

A resistor with resistance $R$ is connected to a battery of e.m.f. $V$. A current $I$ flows through the resistor. The resistor dissipates power $P$, and over a time $t$ the energy transferred is $E$. Which expression is correct?

  • A$E = IVt$
  • B$E = PIt$
  • C$P = \frac{V}{R}$
  • D$P = \frac{V}{R}$

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