Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET201726 Apr 2017Evening ShiftPhysicsAlternating CurrentActual

A current of 4 ~A flows in a coil when connected to a 12 ~V d.c. source. If the same coil is connected to a 12 ~V , ( 25 ) Hz a.c source, a current of 2.4 ~A flows in the circuit. The inductance of the coil is

Options

  1. Aaligned & 100 mH aligned
  2. Baligned & 80 mH aligned
  3. Caligned & 60 mH aligned
  4. Daligned & 50 mH aligned

Correct answer

B. aligned & 80 mH aligned

Step-by-step solution

No solution. Refer to answer key.

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 AP EAMCET PYQs