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NIOS Silver Jubilee Year

Basic Electricity

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Rural Technology



Electrical Power

Electrical Energy


In previous lesson we have studied symbols and their uses in electrical theory. In this lesson, we are going to learn about basic electricity. Your entire study of electricity is based on electron’s theory. The electron theory assumes that all electrical & electronic effects are due to movements of electrons from one place to another place. All effects of electricity take place because of the existence of tiny particle called the ‘Electron’. Since no one actually has seen an electron, but only the effects it produces, we call the laws governing its behavior, the electron theory. Before working with electricity we must know what is an electron & causes in the material for movement.


After the going this lesson, you will be able to:

  • define atomic structure of matter
  • define electricity, current,EMF, resistance
  • explain electrical power and electrical energy


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