Question

An LL-RR-CC series circuit is connected to a 120 HzHz ac source that has VrmsVrmsV_rms =...

An LL-RR-CC series circuit is connected to a 120 HzHz ac source that has VrmsVrmsV_rms = 88.0 VV. The circuit has a resistance of 75.0 ΩΩ and an impedance at this frequency of 115 ΩΩ.

Part A

What average power is delivered to the circuit by the source?

Express your answer with the appropriate units.
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Homework Answers

Answer #1

average power in seeries LCR circuit is given by

where V is the rms voltage

Z is the impedence

Cos is the power factor which is equal to R/Z

substitute the values in the above formula

P = V2(R/Z)/Z

P = V2R/Z2

P = 88*88*75/(115)2

P = 43.92 Watts

Please ask your doubts or queries in the comment section below.

Please kindly upvote if you are satisfied with the solution.

Thank you.

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