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The phenomenon of electrocorrosion

Current, received from a galvanic battery, has a relatively small capacity, therefore, it is mainly used in electrical engineering weak currents, for example, in telephony, in telegraphy and t. d. Galvanic cells and batteries are widely used in small sized radios and TVs, in various kinds of mechanical toys. Batteries are common PA transport. With their help, are driven by electric carts — trolleys for transportation of goods in railway stations and in the shops. The car batteries are used for starting the engine and for lighting in Parking lots. The batteries power the engines of submarines.

The widespread use of motor transport in modern cities heavily pollutes the air, what is harmful effect on human health. Therefore, work is underway on the creation of electric vehicles, in the future, possible, will replace cars. Modern electric cars run on batteries.

Note, that bring great harm to local galvanic elements (they are called galvanic pairs), I randomly occur in metal structures in the contact of dissimilar metals. The electrolyte in the local elements is usually water, in which d is almost always quite a lot of ions. The damp air metallic object covered by the film of water and local elements begin to give current, corrosive metals. Such currents are called parasitic galvanic currents, and they produce destruction called electrocorrosion.

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