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Batteries produce electricity by means of chemical action. A battery contains two different conductors, or electrodes. Usually, one of these is the metal case of the battery.

The electrodes are separated by a conducting liquid or paste, called the electrolyte. The substances in the battery react chemically with each other to produce an electrical current.

As a result of chemical activity a positive charge builds up at one electrode, and this can flow through a conductor such as a wire to read more...

Tags: electricity, chemical

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