Home
Class 12
PHYSICS
In an LCR circuit, inductive reactance a...

In an LCR circuit, inductive reactance and capacitive reactance was found to be equal. The resistance was found to be `20Omega`. The probable impedance of the combination is

A

zero

B

`20Omega`

C

`40sqrt(2)Omega`

D

`400Omega`

Text Solution

Verified by Experts

The correct Answer is:
B

If `X_(L)=X_(C)` then Z=R
`therefore Z=20Omega`
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    NIKITA PUBLICATION|Exercise MCQ|314 Videos
  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

Similar Questions

Explore conceptually related problems

How will the inductive reactance and capacitive reactance change on doubling the frequency of AC ?

In a seris LCR circuit, the inductive reactance (X_(L)) is 10 Omega and the capacitive reactance (X_(C)) is 4 Omega . The resistance (R) in the circuit is 6 Omega. The power factor of the circuit is :

A 200V ac source is applied in a LCR series circuit which consists of an inductive reactance of 50Omega a capacitive reactance of 50Omega and the resistance of 10 Omega The potential difference across the resistance is .

In an experiment, 200V AC is applied at the end of an LCR circuit. The circuit consists of an inductive reactance (X_(L)) = 50Omega , capacitive reactance (X_(c)L=50Omega , and capacitives resistance (R ) = 10Omega , The impendance of the circuit is

The capacitive reactance in an A.C. circuit is

An a.c. circuit an inductive reactance of 80Omega and a pure resistace of 60 Omega . What is the impendance of the circuit?

In AC series circuit, the resistace , inductive reactance and capacitive are 3Omega , 10Omega and 14Omega respectively. The impedance of the circuit is

In L-R circuit, resistance is 8Omega and inductive reactance is 6Omega then impedance is:

200V A.C. is applied at the ends of an LCR circuit. The circuit consists of an inductive reactance X_(L) = 50Omega capacitive reactance X_(c) = 50 Ω and ohmic resistance R = 10 Ω . Calculate the impedance of the circuit and also potential differences across L and R What will be the potential difference across L-C

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. An inductance of 0.5 H, a capacitance of 1muF and a resistance of 100 ...

    Text Solution

    |

  2. The current flowing through a circuit of resistance 109Omega and an in...

    Text Solution

    |

  3. In an LCR circuit, inductive reactance and capacitive reactance was fo...

    Text Solution

    |

  4. In an AC circuit, the current is given by i=5sin(100t-(pi)/2) and the ...

    Text Solution

    |

  5. A 100 W 200 V bulb is connected to a 160 V power supply. The power con...

    Text Solution

    |

  6. In an AC circuit voltage applied is e=220 sin 100 t. if the impedance ...

    Text Solution

    |

  7. An a.c. emf of e=220 sin omega t is applied across the capacitor, the ...

    Text Solution

    |

  8. An a.c. emf of e=220 sin 100pit is passed through the resistance of 1 ...

    Text Solution

    |

  9. In an AC circuit with voltage V and current I, the power dissipated is

    Text Solution

    |

  10. The reactance of capacitor at 50Hz is 10Omega. What will be its reacta...

    Text Solution

    |

  11. Power factor of the AC circuit varies between

    Text Solution

    |

  12. The capacitive reactance of a capacitor is d.c. circuit in ohm is

    Text Solution

    |

  13. The graph between inductive reactance and frequency is

    Text Solution

    |

  14. The alternating emf of e=e(0) sin omegat is applied across LR series c...

    Text Solution

    |

  15. The alternating emf of e=e(0) sin omegat is applied across capacitor C...

    Text Solution

    |

  16. The current leads the voltage by an angle phi which is given by

    Text Solution

    |

  17. The power dissipated in alternating circuit with voltage e=e(0) sin om...

    Text Solution

    |

  18. The powerr factor in CR circuit is given by

    Text Solution

    |

  19. For minimum dissipation energy in the circuit, the power factor should...

    Text Solution

    |

  20. Two electric appliances of power rating W(1) and W(2) at 220 V are con...

    Text Solution

    |