Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Ratio of impedance to capacitive
reactance has
Physics · JEE
Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current Mock Test for JEE
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A Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current JEE mock test on Goodmarks lets you attempt 21+ timed MCQs with instant feedback. Use it to benchmark speed, accuracy, and readiness for JEE Main Physics.
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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 15 free MCQs for Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current. Unlock 6+ 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
Q9PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The power in series -circuit with
source is given by :
Q10PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The factor of an ac circuit lies
between:
Q11PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
With increase in frequency of an A.C.
supply, the inductive reactance
Q12PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
A resistance inductance
henry and capacitive reactance are connected in series to an
ac generator, then:
Q13PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
circuit the
capacitance is changed from to
For the same resonant frequency, the inductance should be changed from
to
Q14PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The given graph shows variation with
time in the source voltage and steady
state current drawn by a series RLC
circuit.
Which of the following statements
is/are correct?
This question has multiple correct options
Q15PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Assertion
Potential difference across, resistor,
capacitor and inductor each is Then, voltage function and current functions should be in phase.
Reason
At this condition current in the circuit
should be maximum.
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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…
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