A charge of 5.0 C transfers 20 J in lamp P and 35 J in lamp Q.
A voltmeter is connected across each lamp.
Which pair gives the readings?
P: 7.0 V7.0\ \mathrm{V}7.0 V; Q: 4.0 V4.0\ \mathrm{V}4.0 V
P: 100 V100\ \mathrm{V}100 V; Q: 175 V175\ \mathrm{V}175 V
P: 175 V175\ \mathrm{V}175 V; Q: 100 V100\ \mathrm{V}100 V
P: 4.0 V4.0\ \mathrm{V}4.0 V; Q: 7.0 V7.0\ \mathrm{V}7.0 V
94 exam-style questions on Edexcel GCSE Physics 10.1 Circuits, charge and current, covering 10.1.1 Structure of the atom, 10.1.2 Circuit diagrams and symbols, 10.1.3 Series and parallel circuits, 10.1.4 Potential difference and voltmeters, 10.1.5 Energy transferred, charge and potential difference, and 10.1.6 Current, ammeters and charge flow. Each one has a worked solution and a mark scheme showing where the marks go.