mains electricity
what does A.C stand for
Altinating current
what is the potential difference of UK electicity
230v
what is the frequency of UK electricity
50Hz
what colour is the neutral wire
blue
what is the yellow and green wire
earth wire
what is the function of the earth wire
bring excess charge to the ground
what is the voltage of of the live wire
230v
what is the voltage of the neutral wire
0v
whats the equation that links energy transfered , power and time
energy transfered = power x time
what is the function of a step up transformer
increase voltage and decrease of current
what is the function of the step down transformer
decrease if voltage and increase of current