An airport baggage conveyor transfers energy usefully at a constant rate of 375 W. An energy meter records the total energy supplied to the conveyor.
| Time in s | Total energy supplied in J |
|---|---|
| 5 | 3000 |
| 13 | 8000 |
What is the efficiency of the conveyor between 5 s and 13 s?
1.671.671.67
0.380.380.38
0.600.600.60
0.630.630.63
128 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency, covering 8.3.1 Power and 8.3.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.