A micro-hydrokinetic turbine is suspended in a fast-flowing drainage canal to harvest electrical energy from urban runoff.
Explain why it is physically impossible for the turbine to extract 100% of the kinetic energy of the water passing through it.
38 exam-style questions on Edexcel GCSE Physics 3.2 Dissipation and efficiency, covering 3.2.1 Dissipation of energy, 3.2.2 Reducing unwanted energy transfers, 3.2.3 Efficiency, and 3.2.4 Increasing efficiency. Each one has a worked solution and a mark scheme showing where the marks go.