A 4.0 Ω resistor and an 8.0 Ω resistor are in series across a 6.0 V supply. A voltmeter is connected across the 8.0 Ω resistor. What are the current through the 4.0 Ω resistor and the voltmeter reading?
0.50 A0.50\ \mathrm{A}0.50 A and 4.0 V4.0\ \mathrm{V}4.0 V
0.75 A0.75\ \mathrm{A}0.75 A and 6.0 V6.0\ \mathrm{V}6.0 V
1.5 A1.5\ \mathrm{A}1.5 A and 4.0 V4.0\ \mathrm{V}4.0 V
0.50 A0.50\ \mathrm{A}0.50 A and 2.0 V2.0\ \mathrm{V}2.0 V
81 exam-style questions on Edexcel GCSE Physics 10.2 Resistance, covering 10.2.1 Current in a circuit and conservation at junctions, 10.2.2 Resistance and variable resistors, 10.2.3 Series and parallel resistance, 10.2.4 I–V characteristics of components, and 10.2.5 LDRs and thermistors. Each one has a worked solution and a mark scheme showing where the marks go.