Physics · Oct / Nov 2018 · Paper 11 · Question 30

Three identical resistors are joined in series to a cell. [circuit diagram showing a cell, three resistors in series, voltmeter P across one resistor and voltmeter Q across two resistors] Voltmeter Q reads 8.0 V. What is the reading on voltmeter P and what is the e.m.f. of the cell?

1. Areading on P / V: 4.0, e.m.f. of cell / V: 8.0
2. Breading on P / V: 4.0, e.m.f. of cell / V: 12
3. Creading on P / V: 8.0, e.m.f. of cell / V: 8.0
4. Dreading on P / V: 8.0, e.m.f. of cell / V: 12

As printed in the paper