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MHT CET202619 April 2026Evening ShiftPhysicsAlternating CurrentActual

In series LCR circuit R = 10 , and impedance is 30 , . An r.m.s. voltage 210 V, is applied across the circuit. The true power consumed in AC circuit is

Options

  1. A360 W
  2. B420 W
  3. C490 W
  4. D600 W

Correct answer

C. 490 W

Step-by-step solution

Given R = 10 , , Z = 30 , , and V_ rms = 210 V. The rms current in the circuit is given by: I_ rms = V_ rms Z = 210 30 = 7 A The true power consumed in the AC circuit is: P = I_ rms ^2 R Substituting the values: P = (7)^2 10 = 49 10 = 490 W Answer: 490 W

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