Elektriese stroom: Verskil tussen weergawes

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RAM (besprekings | bydraes)
RAM (besprekings | bydraes)
Lyn 17:
[[Beeld:Stranded lamp wire.jpg|thumb|'n Tipiese metaaldraad wat gebruik word vir elektriese geleiding is die gevlegde [[koper|koperdraad]].]]
 
Wanneer 'n metaaldraad verbind word aan die twee terminale van 'n [[gelykstroom]] [[spanningsbron]] soos 'n [[battery]], veroorsaak die bron 'n elektriese veld oor die geleier. Die oomblik wanneer kontak gemaak word, word die [[vrye elektron]]e gedwing om na die positiewe terminaal te beweeg onder die invloed van hierdie veld. Die vrye elektrone kan daarom beskou word as die [[stroomdraer]] in 'n tipiese vastestofgeleier. Vir 'n elektriese stroom van 1 ampere, beweeg 1 [[coulomb]] se [[elektriese lading]] elke [[sekonde]] deur die denkbeeldige vlak waardeur die geleier loop.
 
 
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When a metal wire is connected across the two terminals of a [[Direct current|DC]] [[voltage source]] such as a [[battery (electricity)|battery]], the source places an electric field across the conductor. The moment contact is made, the [[free electron]]s of the conductor are forced to drift toward the [[positive]] terminal under the influence of this field. The free electron is therefore the [[current carrier]] in a typical solid conductor. For an electric current of 1 ampere rate, 1 [[coulomb]] of [[electric charge]] (which consists of about 6.242 &times; 10<sup>18</sup> electrons) drifts every [[second]] through the imaginary plane through which the conductor passes.
 
The current ''I'' in [[ampere]]s can be calculated with the following equation: