Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Ratio of impedance to capacitive
reactance has
Physics · JEE
Important Questions: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current for JEE
21+ syllabus-aligned questions available
Quick answer
The most important Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current questions for JEE cover conceptual traps, standard results, and numerical patterns from Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current. Goodmarks provides 21+ high-yield MCQs with full solutions.
Focus on what matters most. These important Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current questions cover high-weightage concepts from Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current — the topics JEE repeats every year.
Syllabus context
Part of Electromagnetic Induction and Alternating Currents in JEE Main Physics.
- Electromagnetic induction: Faraday's law, induced emf and current, Lenz's law, eddy currents, self and mutual inductance
- Alternating currents, peak and RMS value of alternating current/voltage
- Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
- AC generator and transformer
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.
Q2PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The power loss in an circuit is
when in the circuit there is only
Q3PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Assertion
In series circuit, current
and voltage are in same phase at
resonance.
Reason
In series 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
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 and
impedance is . An r.m.s. voltage
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 , then
Q8PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The inductive reactance of a choke coil
of in an circuit of 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.
Popular questions in Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
- The inductive reactance of a choke coil of \( 1 / 4 \pi m H \) in an \( A C \) circuit of \( 50 H z \) will be…
- In series LCR circuit \( R=18 \Omega \) and impedance is \( 33 \Omega \). An r.m.s. voltage \( 220 V \) is applied acros…
- A circuit consists of a resistor,an inductor and a capacitor connected in series. If the resistance of a resistor is \( …
- The inductive reactance of a choke coil of \( 1 / 4 \pi m H \) in an \( A C \) circuit of \( 50 H z \) will be…
- With increase in frequency of an A.C. supply, the inductive reactance…
- Assertion A capacitor blocks direct current in the steady state. Reason The capacitive reactance of the capacitor is inv…
Frequently asked questions
What makes a Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current question "important" for JEE?
Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.
Which subtopics in Electromagnetic Induction and Alternating Currents are high-weightage?
Key areas include Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current. Prioritise these before moving to edge cases.
How many important questions should I revise?
Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.
Can I practise only important questions on Goodmarks?
Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.
Related topics
How to Prepare: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
JEE preparation strategy and study plan
Practice: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Online Practice
MCQs: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
MCQs
PYQs: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Previous Year Questions
Mock Test: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Mock Test
Notes: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Notes & Formulas
Mistakes: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Common Mistakes
Weightage: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Weightage
Revision: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Revision
Concepts: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Concepts
Tricks: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Short Tricks
Easy: Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Easy MCQs