A box has four terminals P, Q, R and S and includes two identical resistors. If a battery with electromotive force (e.m.f.) $E$ and negligible internal resistance is connected across PS, a high-resistance voltmeter placed across QR shows $\frac{E}{2}$. Which diagram indicates the correct arrangement of the two resistors inside the box?
Physics 9702 · AS & A Level · Potential dividers