Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

A resistor of resistance $R$ carries a current $I$ for a duration of $t$. The potential difference (p.d.) across the resistor is $V$. Which equation states the power $P$ dissipated in the resistor?

  • A$P = IR$
  • B$P = It$
  • C$P = IV$
  • D$P = \dfrac{IV}{t}$

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