JEE Advanced Physics: AC Circuits Practice Questions

13 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.

  1. Q1.
    What is the inductive reactance of an inductor of 0.5 Henry at a frequency of 50 Hertz?
    Easy
  2. Q2.
    An alternating current is given by the equation I = 10 sin(100 pit). What is the frequency of this current in Hertz?
    Easy
  3. Q3.
    In a pure inductive circuit, the phase difference between the voltage and the current is:
    Easy
  4. Q4.
    In an AC circuit, the root mean square value of current is related to the peak current by which factor?
    Easy
  5. Q5.
    In an AC circuit, the power factor is 0.5. If the phase difference between voltage and current is 60 degrees, the circuit could be:
    Medium
  6. Q6.
    A capacitor of 10 microfarads is connected to an AC source of 220 V, 50 Hz. The rms current in the circuit is approximately:
    Medium
  7. Q7.
    In a series LCR circuit, the resonance frequency is f. If the capacitance is made 4 times its initial value and the inductance is made 1/4 times its initial val
    Medium
  8. Q8.
    An AC voltage source V = 200 sin(100t) is applied across a parallel combination of a resistor R = 100 ohms and an inductor L = 1 H. The total current drawn from
    Medium
  9. Q9.
    In a series LCR circuit, the resistance R, inductive reactance XL, and capacitive reactance XC are such that XL = 2XC. If the frequency of the source is doubled
    Hard
  10. Q10.
    An AC source with voltage V = V0 sin(omega t) is connected to a series LCR circuit. If the frequency of the source is varied such that the current in the circui
    Hard
  11. Q11.
    An ideal inductor of inductance L is connected to an AC source V = V0 sin(omega t). The average power dissipated in the inductor over one complete cycle is equa
    Hard
  12. Q12.
    A capacitor of capacitance C is charged to a potential V and then connected to an inductor of inductance L. The maximum current in the resulting LC circuit is g
    Hard
  13. Q13.
    In a series LCR circuit, the power factor is 0.5 at a frequency f1 and 1.0 at a frequency f0. If the frequency is changed to f2, the power factor becomes 0.5 ag
    Hard

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AC Circuits — JEE Advanced Physics Practice Questions with Solutions | SolveGini