Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Energy Resources and Electricity Generation
71 practice questions
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Question 71
7 marks · Normal
Answer and see the solution →A village uses two main sources for its electricity supply: a local river is used for hydroelectric power, and a diesel generator provides backup power when needed. Many houses also have solar heating panels for water heating.
(a)[2 marks]Describe the energy transfers that occur when generating electricity using the local hydroelectric power station.
(b)[1 mark]Give one environmental disadvantage of using the diesel generator.
(c)[1 mark]Suggest one reason why the diesel generator is only used as a backup and not as the main supplier.
(d)[3 marks]Explain how the design of a solar heating panel makes it efficient at heating water. Refer to specific features.