A domestic solar photovoltaic array has an efficiency of 18%. During a clear afternoon, the array generates 4.05×107 J4.05 \times 10^7\text{ J}4.05×107 J of useful electrical energy.
Calculate the total solar energy incident on the array during this period.
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.