Exampere definition of Exampere in the Free Online Encyclopedia.

ampere (ăm`pēr), abbr. amp or A, basic unit of electric current. It is the fundamental electrical unit used with the mks system mks system, system of units of measurement based on the metric system and having the meter of length, the kilogram of mass, and the second of time as its fundamental units.
..... Click the link for more information. of units of the metric system metric system, system of weights and measures planned in France and adopted there in 1799; it has since been adopted by most of the technologically developed countries of the world.
..... Click the link for more information. . The ampere is officially defined as the current in a pair of equally long, parallel, straight wires 1 meter apart that produces a force of 0.0000002 newton (2 × 10⁻⁷ N) between the wires for each meter of their length. Current meters such as ammeters and galvanometers are calibrated in reference to a current balance that actually measures the force between two wires.

A measurement of electrical current in a circuit, commonly called an "amp." Contrast with "volts," which is a measure of force, or pressure, behind the current. Multiplying amps times volts derives "watts," the total measurement of power. In electrical equations such as Ohm's Law, the symbol for ampere is "I" (see Ohm's Law).

One ampere is 6,280,000,000,000,000,000 (6.28 x 10¹⁸) electrons passing by the point of measurement in one second. See ampere-hour, volt and watt.

(unit, electronics)

Ampere - (Amp, A) The unit of electrical current flow. One Amp is the current that will flow through a one-ohm resistance when one Volt DC is applied across it.

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