At resonance, the value of the power factor in an L-C-R series circuit is
Correct answer: C. 1
- A. Zero
- B. 1/2
- C. 1
- D. Not definite
Explanation
Explanation: At resonance in an L-C-R series circuit, the impedance becomes purely resistive, and the power factor is maximum. In a purely resistive circuit, the power factor is 1, indicating that the current is in phase with the voltage.Incorrect options:a. Zero - The power factor is not zero at resonance. It is at its maximum value of 1.b. 1/2 - The power factor at resonance is 1, not 1/2.d. Not definite - The power factor at resonance is definite and is equal to 1, representing a purely resistive circuit.
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