Voltage (volts)
Electrons need something to make them move from atom to atom through a circuit. When electrons are flowing, there has to an electrical force somewhere pushing the electrons. Without a push everything would stay relatively static and we would have no flow of energy.
This is what is know as voltage.
Voltage is measured in volts.
The supply of voltage to domestic and small commercial premises varies in different countries and it is essential to know this.
In general you can split it up into two parts of the world:
120 and 220 Volt; (USA)
230 Volt (Europe & Asia)
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