TRANSFORMERS AND NATIONAL GRIDS
1 mark · EasyWhat is the approximate voltage supplied to homes after passing through a step-down transformer in the UK?
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230 V (±10)
Also accept: 230 volts
Common mistakes: 400 V; 12 V
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Marking points
A1 · 1 mark · States 230 V as the voltage supplied after a step-down transformer.
Worked solution
The voltage supplied to homes by the National Grid (after a step-down transformer) is approximately 230 V.