An aerospace engineer is testing a smart carbon-fiber composite wing panel to monitor structural integrity by measuring its electrical resistance. The panel is connected to a stable DC voltage source.
Identify the two electrical measurements that must be made directly from the circuit to determine the electrical resistance of this composite panel.
59 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.