Watt
El Watt (sinboło: W) xe l'unità de mexura de ła potensa del Sistema Internasional.
Descrision
Un watt equivałe a 1 joule al secondo (1 J/s) e xe equivałente, in unità eletriche, a un volt par ampere (1 V · A, varda soto par l'uxo in ełetrotecnica).
El watt el ciapà el nome da James Watt par el so contributo inte ło sviłupo de ła machina a vapore.
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El watt, na mexura de potensa, nò'l và confuxo co el wattor che xe na mexura de energia. Quest'ultima corisponde all'energia prodota da na potensa de un watt par un'ora, quindi 3.600 joule. Nò apartien al SI, in quanto contien ła mexura del tenpo in ore. Quindi na lanpadina che asorbe 100 W, in do ore consuma 200 Wh (720 000 J).
In eletronega se utiłixa comunemente anca el voltampere e el voltampere reativo come unità de meura rispetivamente de ła potensa aparente e de ła potensa reativa.
Alcuni dei multipli e sotomultipli pì utiłixai del watt:
- miliwatt (mW) = 10−3 W = 0,001 W
- watt = 100 W = 1 W
- chiłowatt (kW) = 103 W = 1000 W
- megawatt (MW) = 106 W = 1 000 000 W
- xigawatt (GW) = 109 W = 1 000 000 000 W
- terawatt (TW) = 1012 W = 1 000 000 000 000 W
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