Current

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Electric current means, depending on the context, a flow of electric charge or the rate of flow of electric charge. This flowing electric charge is typically carried by moving electrons, in a conductor such as wire.

The SI unit for measuring the rate of flow of electric charge is the ampere, which is charge flowing through some surface at the rate of one coulomb per second. Electric current is measured using an ammeter.

The current flowing through a component can be calculated using Ohms law with this equasion :- I = V/R I=amps, V=volts, R=resistance


SI multiples for Amp (A)
Submultiples Multiples
Value Symbol Name Value Symbol Name
10−1 A dA deciAmp 101 A daA decaAmp
10−2 A cA centiAmp 102 A hA hectoAmp
10−3 A mA milliAmp 103 A kA kiloAmp
10−6 A µA microAmp 106 A MA megaAmp
10−9 A nA nanoAmp 109 A GA gigaAmp
10−12 A pA picoAmp 1012 A TA teraAmp
10−15 A fA femtoAmp 1015 A PA petaAmp
10−18 A aA attoAmp 1018 A EA exaAmp
10−21 A zA zeptoAmp 1021 A ZA zettaAmp
10−24 A yA yoctoAmp 1024 A YA yottaAmp
Common prefixed units are in bold face excluding straight Amp.

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