Wednesday, October 16, 2019

homework and exercises - Power dissipation in AC RC circuit



Can anyone help me with this question?




A 20 A peak-to-peak 60 Hz current passes through a 0.01 µF capacitor which is in series with a 33 Ω resistor. What is the power dissipation?



I have attempted a solution of:


Irms=Ipk2


Pav=I2rms(R)=(20A)2(33Ω)=13200W


However I haven't used all of the values in the question and considered it is an alternating current source


Could I use the impedance?


Z=R2+X2c




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