Physics (AS & A Level) · May / June 2023 · Paper 11 · Question 36

Four potential divider circuits each consist of a battery of electromotive force (e.m.f.) 9 V and negligible internal resistance connected to a combination of resistors. Each of the resistors in the circuits has a resistance of X or 2X. Which circuit has the largest output voltage V?

1. ACircuit A: two resistors X in series, output across lower X
2. BCircuit B: resistors X and 2X in series, output across 2X
3. CCircuit C: resistor X in series with parallel combination of X and 2X, output across parallel combination
4. DCircuit D: resistor X in series with parallel combination of X and 2X, output across parallel combination

As printed in the paper