An AC voltage source,with a peak output of 120 V,results in dissipation of energy in a resistor at rate of 100 W.What is the value of the resistance?
A)144 W
B)120 W
C)100 W
D)72 W

Name: An AC voltage source,with a peak output of 120 V,results in dissipation of energy in a resistor at rate of 100 W.What is the value of the resistance? A)144 W B)120 W C)100 W D)72 W
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Question

Quizplus · Accepted Answer

The RMS voltage is 120V/√2. Using P = V^2/R, solve for R: R = (120/√2)^2 / 100 = 72 Ω.

An AC Voltage Source,with a Peak Output of 120 V,results