Michael Faraday invented electricity through the principle of induction. A magnet induces electric current on the copper coil. This is used to generate electricity. Electricity is nowadays produced by three methods, hydro electric system, thermo electric system and Atomic Power System. Even solar energy is used to generate electricity.
Electricity is essential to humanity. It has made our life comfortable. Thomas Alva Edison invented electric bulb. His invention has illuminated each and every house. Many household activities like sweeping, washing, cooking, ironing clothes, etc can be done by it. Heaters, grinders and electric ovens are used now. They save time.
Industries are factories use electricity to run the machines. Articles such as Radio, Television, VCR, Tape Recorders, Film Projector are run by electricity. They entertain and educate us. Low voltage is used in electric field. This field has grown extensively in a short period. Computer is the latest electrical device which has conquered man. If a minute goes without electricity, people suffer a lot.
It is an indispensable invention. To communicate with people in far off places we use Telephone and Telegraph. So it unites the world. Air-conditioning and refrigeration is also done by electricity. It has helped men to produce new synthetic materials. We have sophisticated electrical equipments to study human organs. So electricity helps humanity for its physical and mental development.
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