Electrical Engineering ⇒ Topic : Electricity
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Dynmo
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The word 'electricity' can be defined as a force which makes electrons moveThis is similar to defining an engine as a force that moves a car or an automobile.Here, we are only describing the effect and not the force. Many theories concerning the nature and behaviour of electricity have been proposed. These theories have gained acceptance because the apparatus built on these principles have demonstrated their ability to work. From time to time, scientists have shown that electricity behaves in a predictable manner when subjected to given conditions. Scientists such as Faraday, Ohm, Lenz and Kirchhoff observed and described the characteristics of electricity and electric current in the form of certain rules. These rules are often referred to as laws. By learning these laws and the methods of producing, controlling and using electricity, we can learn some thing about it, without determining its fundamental identity. | |
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