Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202611 April 2026Evening ShiftPhysicsAlternating CurrentActual

In series LCR circuit, resistance is 18 and impedance 33 . An r.m.s. Voltage of 220 V is applied across the circuit. The true power consumed in a c. circuit is

Options

  1. A400 W
  2. B600 W
  3. C200 W
  4. D800 W

Correct answer

D. 800 W

Step-by-step solution

The true power consumed in an AC circuit is given by the formula: P = I_ rms ^2 R The rms current in the circuit is: I_ rms = V_ rms Z Substituting the given values V_ rms = 220 V and Z = 33 : I_ rms = 220 33 = 20 3 A Now, substituting I_ rms and R = 18 into the power formula: P = ( 20 3 )^2 18 P = 400 9 18 P = 800 W Answer: 800 W

Practice Alternating Current on Quantrex Academy →

More from Alternating Current

An electronic device operates at 2 MHz. The oscillating circuit has an inductance 20 10⁻⁵ H. What is the capacitive reactance of the resonant circuit? 2026When a current of 2.5 A passes through the primary coil of a transformer of 200 number turns, the magnetic flux linked with the secondary coil having 400 turns is 600 10⁻⁶ T m^2 . 2026In a given circuit, the instantaneous values of the alternating voltage and current are V = 0.5 (80 t + 3 ) volt and I = 0.5 (80 t) ampere respectively. Find the average power cons 2026A source of alternating emf = ₀ ( t) is connected to a capacitor. Then the instantaneous current in the circuit is: 2026If wattless current flows in an AC circuit, then the circuit is: 2026A solenoid having resistance R = 60 and inductance L = 0.4 H is connected to an AC source V = 100 2 200t . Find the maximum current. 2026In a circuit containing a pure resistor connected to an AC source, 2026A light bulb rated 100 W is connected to an AC source of 220 V, 50 Hz. The rms current through the bulb is 2026 Full Alternating Current list All MHT CET PYQs