Question

what constitutes an electric current in a circuit

Answer 1

Electric current is the rate at which electric charge flows past a point on the electric circuit. Water current is the rate at which water flows past a point on the water circuit. As such, current is analogous to the number of gallons of water flowing into, along, and out of a slide per unit of time.

It is the difference between the potentials of two terminals of a battery or any other current source connected to a circuit.

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