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

In the circuit shown, the 33-ohm resistor dissipates 0.50 W. What is the battery voltage?

http://phga.pearsoncmg.com/phga2/web/Giancoli6e/Public_Html/Chapter19/Aadxevw0.gif

2. Relevant equations

I am pretty sure that I use the equation V=IR, but I am not for sure how to go about using the 0.50W in the equation. At first I thought that I used P=IV for electric power, but I am just confused.

3. The attempt at a solution

I don't even know what equation to exactly use because the watts are throwing me off.

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# Homework Help: Help finding battery voltage.

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