Define currents?what causes these currents
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An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionised gas (plasma). ... Electric current is measured using a device called an ammeter.
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A current is like a vast river within the ocean, flowing from one place to another. The causes for these currents are differences in temperature, and other natural forces like wind.
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