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Homework Statement
A "90-watt" light bulb uses an average power of 90W when connected to an rms voltage of 120V .
What is the resistance of the lightbulb?
Homework Equations
Pav=(V2rms/R)
The Attempt at a Solution
90W = 120V2/R
90W/120V2 = R
R = .00625[tex]\Omega[/tex]
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