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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

In a series LCR circuit at resonance, the applied emf and current are - ______ - Physics

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प्रश्न

In a series LCR circuit at resonance, the applied emf and current are - ______ 

पर्याय

  • Out of phase

  • Differ in phase by π/4 radian.

  • Differ in phase by π/2 radian.

  • In phase

MCQ
रिकाम्या जागा भरा
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उत्तर

In a series LCR circuit at resonance, the applied emf and current are - In phase.

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Electric Resonance
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पाठ 13: AC Circuits - MCQ’S

संबंधित प्रश्‍न

A series LCR resonant circuit is used as ______


A parallel LC resonant circuit is used as ______ 


State any one characteristic of a parallel LC AC resonance circuit.


State any two characteristics of a series LCR AC resonance circuit.


A coil of resistance 10 Ω and inductance 100mH and a capacitor of variable capacitance are connected across a 20V, 50Hz A.C. supply. At what capacitance will resonance occur?


Out of the following graphs, which graph shows the correct relation (graphical representation) for LC parallel resonant circuit?


In series resonance, LCR circuit, below the resonant frequency, the circuit is ____________.


An A.C. voltage of r.m.s. value 0.1 V is applied to an LCR series circuit in which L = 100 µH and C = 9 x 10-8 F and R = 2 `Omega`. The resonant frequency will be ____________.


If the potential difference across the inductor (9 mH) is same as that across the condenser (10 µF) in a series R-L-C circuit, then the frequency of the applied e.m.f. is nearly ____________.


A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillation of frequency f. If L is doubled and C is changed to 4C, the frequency will be ____________.


In parallel resonance, the current will be minimum, when ____________.


In LCR circuit, the capacitance is changed from C to 4C. For some resonant frequency, the inductance should be changed from L to ____________.


Out of the following graphs which graph shows the correct relation for LC parallel resonant circuit?






In rejector circuit, above resonant frequency the circuit is ____________.


In series resonant circuit, at resonance, ____________.


A coil of 16 mH and a capacitor of 10 µF are in series with an A.C source along with 5 `Omega` resistances. If inductive reactance is equal to capacitive reactance, then the angular frequency (in rad/s) of source is ____________.


The resonant frequency of a series LCR circuit is 'f'. The circuit is now connected to the sinusoidally alternating e.m.f of frequency '2f'. The new reactance X'L and X'C are related as ____________.


An a.c. source of variable frequency 'f' is connected to an LCR series circuit. Which one of the graphs represent the variation of current 'I' in the circuit with frequency 'f'?


In LC parallel resonance circuit, choose the correct statement.


An electric lamp connected in series with a capacitor and an AC source glows with a certain brightness. (a) How does the average power change on increasing the capacitance? (b) How does the brightness of the lamp change on increasing the capacitance?


State the use of the acceptor circuit.


Find the reactance of a coil of inductance 100 mH at a frequency of 50 Hz.


In LCR series circuit, the condition for current resonance is ______.


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