AQA · GCSE · Physics · Higher
Mains Live-to-Neutral Potential Difference
What is the potential difference between the live wire and neutral wire in the mains electricity supply?
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Marking points
- 1 Gives 230 V.
Full-mark answer
230 V
Why this answer loses marks
Gives the mains frequency instead of a potential difference.
The question asks for the standard live-to-neutral potential difference, not the supply frequency.