Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET20242 May 2024Morning ShiftPhysicsAlternating CurrentActual

In an A.C. circuit, the potential difference ' V ' and current 'I' are given respectively by V =100 (100 t ) V , I =100 (100 t + 3 ) mA The power dissipated in the circuit will be [Given 3 = 1 2 ]

Options

  1. A10^4 ~W
  2. B10 W
  3. C2.5 W
  4. D5 W

Correct answer

C. 2.5 W

Step-by-step solution

aligned & V=100 (100 t) V & I=100 (100 t+ 3 ) mA aligned Comparing these equations with the standard forms, V = V ₀ t and I = I ₀ t we get, V ₀=100 ~V , I ₀=100 10⁻³ ~A and = 3 aligned P = V _ rms I _ rms & = V ₀ 2 I ₀ 2 3 & = 100 2 100 10⁻³ 2 1 2 =2.5 ~W aligned

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