11.4 Apparent Power and Power Factor (2)

Purely resistive load (R)

P/S = 1, all power are consumed

θv– θi = 0,   Pf = 1

Purely reactive load (L or C)

θv– θi = ±90o, pf = 0

P = 0, no real power consumption

Resistive and reactive load (R and L/C)