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The rate at which an electric charge flows in a conductor is called current. It's the number of electrons that pass through a certain point in a second. This implies that the current increases as more electrons travel by a given point.
The symbol for current is the letter “I”. Electrical current is measured in Amperes or "amps".
The SI unit of electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit. Electric current is measured using a device called an ammeter.
One ampere of current represents one coulomb of electrical charge (6.24 x 1018 charge carriers) moving past a specific point in one second.
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