A Series Circuit Consists of a 50-Hz Ac Source,a 40-Ω

question 44

Multiple Choice

A series circuit consists of a 50-Hz ac source,a 40-Ω resistor,a 0.30-H inductor,and a 60-μF capacitor.The rms current in the circuit is measured to be 1.6 A.What is the power factor of the circuit?

• A) 0.70
• B) 0.66
• C) 0.63
• D) 0.59
• E) 0.56

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