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OpenStudy (anonymous):
http://session.masteringphysics.com/problemAsset/1169458/2/jfk.Figure.23.P50.jpg The 10 Ω resistor in the figure is dissipating 40 W of power. (Figure 1) How much power is the 20Ω resistor dissipating?
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OpenStudy (anonymous):
P = V^2/R So, since it's parallel the voltage is the same. V^2 = P * R = 40W * 10Ω = 400 Power in 20Ω = V^2/R = 400/20 = 20W
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