Q

# MHTCET -In series LCR circuit R = 18 ohm and impedance is 33 ohm. An r.m.s Voltage 220 V is applied across the circuit.

The true power consumed in a.c. circuit is

1. 400 W
2. 600 W
3. 220 W
4. 800 W
Views

Impedence, Z = 33 ohm

Resistance, R = 18 ohm

Voltage = 220 V

$cos\theta =\frac{R}{Z}=\frac{18}{33}=\frac{6}{11}$

Power, $P=\frac{V^{2}}{Z}cos\theta$

$P=\frac{220^{2}}{33}\times \frac{6}{11}=800\ W$

Exams
Articles
Questions