A potential divider circuit is made by linking a battery with negligible internal resistance in series with two variable resistors, as illustrated. The variable resistors have resistances $R_x$ and $R_Y$. $V_x$ is the potential difference across resistance $R_x$. $R_x$ and $R_Y$ are both altered at the same time. Which set of changes must make $V_x$ increase?
Physics 9702 · AS & A Level · Potential dividers