The diagram depicts a battery with electromotive force (e.m.f.) $6\,\text{V}$, linked in series to a resistor and a uniform resistance wire RQ with a length of $60\,\text{cm}$. The resistance of RQ is the same as that of the resistor. Terminal $X$ is joined to fixed point $R$. Terminal $Y$ is connected to point $P$, and this connection can be made at any point along the wire. $L$ represents the distance from $R$ to $P$. Which graph shows how the potential difference (p.d.) $V$ across $XY$ changes with $L$?
Physics 9702 · AS & A Level · Potential dividers