Between 1831-1832 Michael Faraday, an English scientist discovered the principal of electromagnetic generators, called the Faraday’s Law after performing an experiment using a magnet and a coil. Faraday’s law shows the relationship between magnetism and motion.
Faraday’s law of electromagnetic induction finds its application in most of the electrical machines: electrical transformers, electrical generators, musical instruments, medical equipment, etc, no matter if the source of energy is coal, oil, gas, or wind.
The Faraday disk was the first electric generator.
Generators are now used to produce electrical power during a power outage and prevent discontinuity of activities and business operations, or to power remote homes or villages in areas with no electricity.
An electrical Generator converts the mechanical energy based on the phenomenon called electromagnetic induction.
The mechanical energy is converted from chemical or nuclear energy in various types of fuel, or renewable sources, such as wind or falling water.
Turbines and internal-combustion engines are the common systems that supply the mechanical energy for Generators, and the size of the engine is directly proportional to the power output the Generator can supply.
Generators are made in a wide range of sizes, from very small machines with a few watts output to very large power plant devices providing gigawatts of power.