⚙️ FE Exam Prep

Power factor in AC circuits equals:

A V/I
B cos(φ), where φ is the phase angle between voltage and current
C sin(φ)
D tan(φ)

✓ Correct Answer: Option B

PF = cos(φ) = P_real/S_apparent. PF = 1 for resistive loads (φ = 0). Reactive loads have PF < 1.

Related FE Exam Prep Questions