For a series LCR circuit, I vs ω curve is shown: (a) To the left of ω r, the circuit is mainly capacitive. (b) To the left of ω r, the circuit is mainly inductive. (c) At ω r, impedance of the circuit is equal to the resistance of the circuit. (d) At ω r, impedance of the circuit is 0. Choose the most appropriate answer from the options given below: (a) (a) and (d) only. (b) (b) and (d) only. (c) (a) and (c) only. (d) (b) and (c) only.

Answer: (c). For ω XL = ω L, so the circuit is mainly capacitive: (a) true, (b) false. At ωr: XL = XC, so Z = R (not zero): (c) true, (d) false. So the answer is (c) (a) and (c) only.

For a series LCR circuit, I vs ω curve is shown: (a) To the left of ω… | JEE Main 2022 (29 Jun, Shift 1)

Q80JEE Main 2022 · 29 JUN · SHIFT 1Medium

Resonance, Bandwidth & Q Factor

For a series LCR circuit, I vs $\omega$ curve is shown:

(a) To the left of $\omega$ r, the circuit is mainly capacitive.

(b) To the left of $\omega$ r, the circuit is mainly inductive.

(d) At $\omega$ r, impedance of the circuit is 0. Choose the most appropriate answer from the options given below:

Show answer and solution

Answer: (c)

For $\omega < \omega_r$ : $X_C = \frac{1}{\omega C} > X_L = \omega L$ , so the circuit is mainly capacitive: (a) true, (b) false.
At $\omega_r$ : $X_L = X_C$ , so $Z = R$ (not zero): (c) true, (d) false.
So the answer is (c) (a) and (c) only.

Report a mistake

Resonance, Bandwidth & Q Factor question from JEE Main 2022 (29 Jun, Shift 1)

More questions on Resonance, Bandwidth & Q Factor