Explain that step-up transformers increase potential difference from power stations to transmission cables.

Explain that step-up transformers increase potential difference from power stations to transmission cables.. Within Energy transfers, this learning objective sits inside The National Grid for AQA Physics 8463. Focus on using ideas such as transformer, transmission cable, power station, step-up transformer accurately in your explanation. A strong response should define the core idea, describe the relevant physical process, and connect it back to the question wording instead of giving a vague definition. When revising, students should aim to explain the subject clearly, include precise physics vocabulary, and show how the idea links to the wider topic rather than listing isolated facts.