This voltage will produce the necessary pressure to move the electrons. The movement of these electrons is called electric current or amperage. Electricity is one of the great assets we have. Just think for a minute how you feel when your power goes off for a short period of time. Harnessing electricity has improved just about everything in our lives.
Electricity begins mostly at large dams and waterfalls, and some nuclear plants.
The constant flow of water is used to turn large generators, which through magnetism produces electricity. The electricity is than sent to power lines at extremely high voltages.