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Physics 7 Online
OpenStudy (ksaimouli):

how to measure how much watts is needed to power up something which is 220v

OpenStudy (anonymous):

any information about the current?

OpenStudy (shane_b):

I'm sure there's more info to the question but maybe this will help you: http://www.sengpielaudio.com/FormulaWheel-ElectricalEngineering.htm

OpenStudy (anonymous):

you have to be given resistance . P=V^2/R Put the values of V and R to find how much power it will consume.

OpenStudy (anonymous):

You definetely need more info -:)

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