An electric lawnmower is powered by the 230 V domestic mains supply.

One wire in the mains plug is the neutral wire.
The other two wires in a standard three-core cable are:
live and negative
live and earth
positive and earth
positive and negative
Practise Edexcel GCSE Physics Mains electricity and safety with exam-style questions for Foundation and Higher tier. 28 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.