Home
Class 11
PHYSICS
Assertion (A) : The electrostatic energy...

Assertion (A) : The electrostatic energy stored in capacitor plus magnetic energy stored in inductor will always be zero in series `LCR` circuit driven by ac voltage source under condition of resonance.
Reason (R ) : The complete voltage of ac source appears across the resistor in a series `LCR` circuit driven by ac voltage source under condition of resonance.

A

Statement-1 is true, Statement-2: is true, Statement-2 is a correct explanation for Statement-1.

B

Statement-1 is true, Statement-2: is true, Statement-2 is NOT a correct explanation for Statement-1.

C

Statement-1 is true but statement-2 is false

D

Statement-1 is false, Statement-2 is true

Text Solution

Verified by Experts

The correct Answer is:
D

In resonance condition when energy across capacitor is maximum, energy stored in inductor is zero, vice versa is also true. Hence statement 1 is false.
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

In an RL series circuit driven by an ac voltage source with fixed amplitude,

In series LCR AC circuit, the voltage of the source at any instant is equal to

Can the voltage drop across the inductor or capacitro in a series LCR circuit be greater than the applied voltage of the ac souce? Justify your answer.

The ratio of voltage across inductor/condenser to the voltage across resistor in a series resonance circuit is

STATEMENT-1: In a series LCR circuit at resonance, the voltage across the capacitor or inductor may be more than the applied voltage. STATEMENT-2: At resonance in a series LCR circuit, the voltages across inductor and capacitor are out of phase.

In a series LCR circuit, the frequency of the source is more than resonance frequency. The current in the circuit leads the voltage in phases(True/false).

Assertion (A) : At resonance , the current becomes minimum is a sreies LCR circuit. Reason (R) : At resonance, voltage and current are in same phase in a series LCR circuit.

In a series LCR circuit the rms voltage across the inductance , capacitance and resistance are respectively 4 V, 8 V and 5 V . The RMS voltage of the AC source in the circuit is

RESONANCE-ALTERNATING CURRENT-Exercise
  1. In an AC circuit, V and I are given by V=100sin(100t)volts, I=100sin(1...

    Text Solution

    |

  2. In the circuit below, the AC source the voltage V=20cos (omegat) volts...

    Text Solution

    |

  3. A coil of 200Omega resistance and 1.0H inductance is conneted to an AC...

    Text Solution

    |

  4. In series LCR circuit, the voltages across R, L and C are shown in the...

    Text Solution

    |

  5. When 100 V DC is applied across a solenoid, a current of 1.0 A flows i...

    Text Solution

    |

  6. The average power dissipated in a pure inductor L carrying an alternat...

    Text Solution

    |

  7. The power factor of LCR circuit at resonance is-

    Text Solution

    |

  8. In an ac circuit the current is given by i=0.5 sin (314 t + 60^@) mill...

    Text Solution

    |

  9. In an electric circuit applied ac emf is e=20 sin 300t volt and the cu...

    Text Solution

    |

  10. The time required for a 50Hz alternating current to increase from zero...

    Text Solution

    |

  11. A steady dc current of 2.83A is flowing in a resistance wire. The rms ...

    Text Solution

    |

  12. The variation of the instantaneous current (I) and the instantaneous e...

    Text Solution

    |

  13. In a series LCR circuit containing an AC voltage source of frequency o...

    Text Solution

    |

  14. An alternating emf is applied across a parallel combination of a resis...

    Text Solution

    |

  15. The value of current at half power points is -

    Text Solution

    |

  16. The power factor of a good choke coil is

    Text Solution

    |

  17. Which of the following has dimensions different from the other three,-

    Text Solution

    |

  18. In the figure shown, a current of 2 amperes flows in the circuit. The ...

    Text Solution

    |

  19. Assertion (A) : The electrostatic energy stored in capacitor plus magn...

    Text Solution

    |