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Similar term(s): intensity of current, potential difference.
The electrical current is a physical phenomenon caused by the displacement of electrons or ions that induce electric fields. By convention, current is considered to be a flux of positive charges.
The intensity of the current is the quantity of charge which passes in a conductor per unit of time. The intensity of the current is measured in Amperes (A).
Source: Belgian BioElectroMagnetic Group Dictionary
One can compare this to the current of a river. The flow (water quantity per unit of time) would be the intensity expressed as Amperes (A). The pressure would be the potential difference expressed as Volts (V).
As there can exist a pressure (difference in level for example) without an inevitable water circulation, one can detect the electric potential without an inevitable circulation of electrons : thus the terminal voltage of a plug is present if the light is switched on or switched off. However, one does not detect intensity if the appliance is switched off.
Source: GreenFacts
Magnetic field - Alternating current & Direct current - Charge - Electric field - Ion(s) - Voltage
Deutsch: Elektrischer Strom
Español: Corriente eléctrica
Français: Courant électrique
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