A cell, a switch and a resistor are connected in series. Which change allows a steady current to flow?
Opening the switch to complete the circuit
Closing the switch to complete the circuit
Closing the switch to remove the voltage
Opening the switch to remove the voltage
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.