Electrical energy is generated in a power station and transferred to homes through the national grid.
Explain how the national grid is designed to transfer electrical energy efficiently and to supply it safely to homes.
Your answer should refer to where step-up and step-down transformers are used.
108 exam-style questions on Edexcel GCSE Physics 13.2 Transformers and the National Grid, covering 13.2.1 Transformers and induction, 13.2.2 The transformer turns-ratio equation, 13.2.3 The National Grid, 13.2.4 The transformer power equation, and 13.2.5 Advantages of high-voltage transmission. Each one has a worked solution and a mark scheme showing where the marks go.