Theory Of Electricity
Electricity is the set of physical phenomena related with the presence and flow of electric charge. Electricity gives a wide variety of effects, such as lightning, electromagnetic induction, static electricity and electric current. Electricity permits the creation and acception of electromagnetic radiation such as radio waves.
The electricity we use every day is generated in power plants by transforming resources (water, sun, coal, oil, natural gas and wind) into electrical power. It is generated by a large magnet that spins inside coils of wire. High pressure steam or water is used to turn a turbine – a large fan – attached to the generator to get the magnet spinning. As the magnet rotates inside the loops of wire, electric current is produced.
The basic principle and theory of electricity is explained in this educational video bellow. Also you can see how it`s generated and distributed in the United States.
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