As the inductive reactance in an R-L series AC circuit increases, which of the following is correct?
Correct answer: D. All of the above
- A. Power factor is decreasing
- B. XL is increasing, indicating inductive behavior dominance
- C. Energy storing ability increases
- D. All of the above
Explanation
An increase in inductive reactance (XL) means the circuit is more inductive. This increases the phase angle, which decreases the power factor (cos φ). It also signifies a greater ability to store energy in the magnetic field. Therefore, all statements are correct.
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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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