In LC parallel circuit, the coil draws:
Correct answer: C. Lagging current
- A. Leading current
- B. Lagging voltage
- C. Lagging current
- D. Leading voltage
Explanation
At the frequencies lower than resonant frequency, XL < XC or IL > IC , hence the circuit behaves as inductive circuit has lagging power factor. At the frequencies higher than resonant frequency,XL > XC or IL < IC hence the circuit behaves as capacitive circuit has leading power factor.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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