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Homework Statement
The corroded contacts in a lightbulb socket have 8 Ω total resistance.How much actual power is dissipated by a 126 W (115 V) lightbulb screwed into the socket?
Homework Equations
P = I*V
I = E/R
The Attempt at a Solution
I = 115/8 = 14.375
I don't know how to calculate power...