This exam focus covers Exam Focus within Mains Electricity & Safety for GCSE Physics. Revise Mains Electricity & Safety in Electricity for GCSE Physics with 13 exam-style questions and 30 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 15 of 17 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 15 of 17
Practice
13 questions
Recall
30 flashcards
🎯 Exam Focus
Exam Favourite
Mains electricity and safety is examined in virtually every GCSE Physics paper. The three-pin plug, wire functions, and fuse selection are classic multi-mark questions.
What examiners love to ask:
- State the colour and function of each wire in a plug
- Explain how the earth wire and fuse protect a user
- Calculate the correct fuse rating for an appliance (I = P/V)
- Explain why the fuse must be on the live wire, not neutral
- State the UK mains voltage and frequency
- Explain what double insulation is and why no earth is needed
- Compare fuses and circuit breakers