the energy input per second from sunlight is 8.5 kJ
the useful electrical energy output per second is 3.4 kJ.
Calculate the efficiency of this solar panel.
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Markscheme
3.2 Dissipation and efficiency Questions
38 exam-style questions on Edexcel GCSE Physics 3.2 Dissipation and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.