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current

Current is the movement of free electrons in a conductor. The unit for electric current (I) is the ampere (A), named after the French physicist André Marie Ampère (1775 to 1836).

At a current of 1 ampere, an amount of electricity equal to `6.3 * 10^18` electrons or one coulomb (Q) flows through the wire in one second: Q = I x t.

Current is moved through the wires by the electric voltage. The current always flows from a high potential to a lower potential. The voltage direction, indicated in circuitry by arrows, corresponds to the technical direction of current, not the direction of electron movement. The physical quantities voltage (V), current and resistance (R) are directly related to each other via Ohm's law.

Informations:
Englisch: current
Updated at: 22.01.2022
#Words: 117
Links: conductor, unit (U), ampere (A), coulomb (C), wire
Translations: DE
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