Physics · JEE

Hard Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current MCQs for JEE

21+ syllabus-aligned questions available

Quick answer

Hard Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current MCQs train multi-concept problem solving — attempt after mastering easy and medium sets (21+ on Goodmarks).

Push your limits with hard Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current MCQs designed for JEE Advanced-level thinking. 21+ questions with detailed solutions.

Free sample questions

Attempt 8 free MCQs for Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current. Unlock 13+ more with Pro.

Unlock full bank
Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Ratio of impedance to capacitive reactance has
Q2PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The power loss in an ACA C circuit is ErmsE_{r m s} Irms,I_{r m s}, when in the circuit there is only
Q3PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Assertion In series LCRAC\boldsymbol{L}-\boldsymbol{C}-\boldsymbol{R} \boldsymbol{A} \boldsymbol{C} circuit, current and voltage are in same phase at resonance. Reason In series LCRAC\boldsymbol{L}-\boldsymbol{C}-\boldsymbol{R} \boldsymbol{A} \boldsymbol{C} circuit, resonant frequency does not depend on the value of resistance. Hence current, at resonance, does not depend on resistance.
Q4PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The current flowing through the resistor in a series LCR a.c. circuit, is I=ε/R\boldsymbol{I}=\varepsilon / \boldsymbol{R} Now the inductor and capacitor are connected in parallel and joined in series with the resistor as shown in figure. The current in the circuit is now. (Symbols have their usual meaning)
Q5PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
In series LCR circuit R=18ΩR=18 \Omega and impedance is 33Ω33 \Omega. An r.m.s. voltage 220V220 V is applied across the circuit. The true power consumed in a.c. circuit is
Q6PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
For filtering low frequency noise out of a signal the circuit can be built by just putting resistor and capacitor in
Q7PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
If we change the value of RR, then
Q8PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The inductive reactance of a choke coil of 1/4πmH1 / 4 \pi m H in an ACA C circuit of 50Hz50 H z will be

Want unlimited Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current practice?

Pro unlocks the full question bank, topic filters, and attempt history.

Frequently asked questions

When should I attempt hard Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current MCQs?

After 70%+ accuracy on medium MCQs and once core formulas are automatic.