The Power Factor of an Ac $R L$ Circuit with A $100 - \Omega$

question 31

Multiple Choice

The power factor of an ac $R L$ circuit with a $100 - \Omega$ resistor and a certain inductor is $0.60$ . What is the impedance of the circuit?

• A) \(100 \Omega\)
• B) \(170 \Omega\)
• C) \(85 \Omega\)
• D) \(340 \Omega\)
• E) \(60 \Omega\)

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