This comparison covers Fuse vs Circuit Breaker within Mains Electricity & Safety for GCSE Physics. Revise Mains Electricity & Safety in Electricity for GCSE Physics with 18 exam-style questions and 30 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 10 of 16 in this topic. Use this comparison to connect the idea to the wider topic before moving on to questions and flashcards.
⚖️ Fuse vs Circuit Breaker
| Feature | Fuse | Circuit Breaker |
|---|---|---|
| How it works | Wire melts when current too high | Switch trips when current too high |
| After tripping | Must be replaced | Can be reset |
| Response speed | Slower (wire must melt) | Faster |
| Cost | Cheaper | More expensive |
| Location | Inside plug or fuse box | Fuse/consumer unit box |
Practice questions for Mains Electricity & Safety
What does AC stand for, and how does it differ from DC?
Explain how a fuse protects an electrical circuit from damage.
Quick recall flashcards
What is DC?
Direct Current — current flows in one direction only (batteries provide DC)
What is AC?
Alternating Current — current direction reverses constantly (50 times/second in UK)