A portable air-quality sampler is connected to a constant potential difference of 6.0 V. During one sampling cycle, the sampler operates in two stages. The current is steady during each stage.
| Stage | Operation | Current | Time |
|---|---|---|---|
| 1 | collecting an air sample | 0.40 A | 3.0 min |
| 2 | recording the result | 0.25 A | 5.0 min |
Calculate the total energy transferred to the sampler during one sampling cycle.
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.