11. What does an electric circuit mean? Define the unit of current.
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ampere
A common unit of electric current is the ampere, which is defined as a flow of one coulomb of charge per second, or 6.2 × 1018 electrons per second. ... (For more on electric current, see electricity: Direct electric current and electricity: Alternating electric currents.)
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An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.
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