Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Concepts Of Physics MCQ Edition [Volume 2]PhysicsAlternating Current

If a circuit has zero reactance, it is possible that the circuit contains

Options

  1. Aan inductor but no capacitor
  2. Bboth an inductor and a capacitor
  3. Cneither an inductor nor a capacitor
  4. Da capacitor but no inductor

Correct answer

C. neither an inductor nor a capacitor

Step-by-step solution

The net reactance of an AC circuit is given by X = X_L - X_C = L - 1 C . For the circuit to have zero reactance, X = 0 , which requires X_L = X_C . This condition can be satisfied in two cases: First, if the circuit contains neither an inductor nor a capacitor. In this case, X_L = 0 and X_C = 0 , making the net reactance zero. This corresponds to a purely resistive circuit. Second, if the circuit contains both an inductor and a capacitor. At the resonant frequency, the inductive reactance equals the capacitive reac

Practice Alternating Current on Quantrex Academy →

More from Alternating Current

Consider a circuit consisting of a capacitor of capacitance C and a coil with N turns per unit length, cross sectional area S and length d , where d^2 S . There is another coil of 2026An LCR series circuit driven with E_ rms = 90 V at frequency f_d = 30 Hz has resistance R = 80 , , an inductance with inductive reactance X_L = 20.0 , and capacitance with capacitiv 2026A series LCR circuit with R = 20 , L = 1.6 H and C = 40 F is connected to a variable frequency a.c. source. The inductive reactance at resonant frequency is _______ . 2026An a.c. source of angular frequency is connected across a resistor R and a capacitor C in series. The current is observed as I . Now the frequency of the source is changed to /4 , 2026An inductor of 10 mH, capacitor of 0.1 F and a resistor of 100 are connected in series across an a.c power supply 220 V, 70 Hz. The power factor of the given circuit is 0.5 . The d 2026The figure given below shows an LCR series circuit with two switches S₁ and S₂ . When switch S₁ is closed keeping S₂ open, the phase difference ( ) between the current and source v 2026An inductor stores 16 J of magnetic field energy and dissipates 32 W of thermal energy due to its resistance when an a.c. current of 2 A (rms) and frequency 50 Hz flows through it. 2026The electric current in the circuit is given as i=i_ o (t / T) . The r.m.s current for the period t=0 to t=T is _ _ _ _ . 2026 Full Alternating Current list All Concepts Of Physics MCQ Edition [Volume 2] PYQs