A low-voltage indicator circuit contains a lamp and a fixed resistor connected in series with a battery. A switch is connected so that, when it is closed, a wire is connected directly across the fixed resistor.
Explain how closing the switch affects the current through the lamp.
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.