In series LCR circuit R = 18 Ω and impedance is 33 Ω . An RMS voltage of 220 V is applied across the circuit. The true power consumed in the AC circuit is

Step-by-step solution

P = e r m s . i r m s . cos ⁡ ϕ = e r m s . e r m s Z . R Z = 220 × 220 × 18 33 × 33 = 20 × 20 × 18 3 × 3 = 20 × 20 × 2 = 800   W