The overland transmission grid uses step-up and step-down transformers alongside high-voltage cables to distribute electrical power from generating stations to consumer hubs.
Explain how the use of these transformers and high-voltage transmission cables ensures that the distribution of electrical power is as efficient as possible.
In your answer, you should refer to the following equations:
28 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.