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Industrial electric power generation takes place in so-called central electrical installations, they constitute the first step of the electrical supply system. Electric motors and generators are widely used because electricity is a practical form of energy and occurs easily. Electric motors can perform different functions: from drilling holes to move locomotives. Electricity has existed since there is matter. Because matter is composed of atoms, which contain particles that are electrically charged and are known under the term of protons and electrons. The ancient Greeks knew that after rubbing a piece of amber attract light objects, although they didn’t understand why this was happening.

The reality is that they were producing electricity from friction. An object with no electrical charge has the same amount of negatively charged electrons and protons, with load posistiva. Their respective electrical charges cancel each other, and, in set, can’t detect is any kind of electrical charge..