A backup diesel generator is used to supply electricity to a small medical clinic.
The fuel burned by the generator's engine supplies a total of 7200 kJ of energy every minute.
The overall efficiency of the generator is 0.40 (40%).
Calculate the useful power output of the generator.
Give your answer in kW.
26 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.