(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 580w heater is designed for use in Germany, where electric outlets supply 230V(rms) service. What is the power output of the heater when plugged into a 120V(rms) outlet in the U.S.? Ignore the effects of temperature on the heater's resistance.

2. Relevant equations

barP=I(rms)V(rms)

3. The attempt at a solution

I tried to fine I(rms) by first calculating for I in germany: I(rms)=(580w)/(230V).

Then I used this I(rms) to calaulate U.S. power output; barP=(I(rms))(120V).

This did not give the correct answer.

Would I have to consider that germany uses DC and U.S. uses AC, is there a conversion for this?

Thanks

jdoggigs

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# Homework Help: Power output

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