Physics (AS & A Level) · May / June 2022 · Paper 13 · Question 33

A resistor has resistance $R$. When the potential difference (p.d.) across the resistor is $V$, the current in the resistor is $I$. The power dissipated in the resistor is $P$. Work $W$ is done when charge $Q$ flows through the resistor. What is not a valid relationship between these variables?

1. A$I = \dfrac{P}{V}$
2. B$Q = \dfrac{W}{V}$
3. C$R = \dfrac{P}{I^2}$
4. D$R = \dfrac{V}{P}$

As printed in the paper