9702/11 Physics May Jun 2024 Online Test| Cambridge AS & A Level Grade MCQ

In the circuit shown, a battery of negligible internal resistance is connected in series with a pair of fixed resistors $R_1$ and $R_2$.
The circuit is to be used to test whether the electromotive force (e.m.f.) of a particular cell is $1.5V$. The cell is connected between terminals $X$ and $Y$ in parallel with $R_2$ and in series with a galvanometer.
Which statement about the test is correct?