Power factor in AC circuits equals:
✓ Correct Answer: Option B
PF = cos(φ) = P_real/S_apparent. PF = 1 for resistive loads (φ = 0). Reactive loads have PF < 1.
PF = cos(φ) = P_real/S_apparent. PF = 1 for resistive loads (φ = 0). Reactive loads have PF < 1.