A 100 `Omega` resistor is connected to a 220 V. 50Hz as supply. (a) What is the rms value of current in the circuit? (b) What is the net power consumed over a full cycle?
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Here, `V_(rms) = 220 V` and `R = 100 Omega` (a) `therefore I_(rms) = (V_(rms))/R = 220/110 = 2.2 A` (b) Power consumed over a full cycle `P = V_(rms) I_(rms) = 220 xx 2.2 = 484 W`.
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