Home
Class 12
PHYSICS
The capacitive reactance of a capacitor ...

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

A

zero

B

`omegaC`

C

`1//omegaC`

D

`oo`

Text Solution

Verified by Experts

The correct Answer is:
D

For DC, `f=oo" "thereforeX_(C)=(1)/(2pifC)=oo`
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

Define capacitive reactance

The capacitive reactance in an A.C. circuit is

Consider the following two statements A and B and identify the correct answer. {:A) At resonance of L-C series circuit, the reactance of circuit is minimum. {:B) The reactance of a capacitor is an A.C circuit is similar to the reactance of a capacitor in a D.C circuit

What is the capacitive reactance of a 5mu F capacitor when it is a part of a circuit whose frequency is (i) 50 Hz (ii) 10^(6) Hz ?

A series RLC circuit is connected to an AC supply 220 V, 50 Hz. The value of R is 10 Omega . The value of capacitive reactance of capacitor and incuctive reactance of inductor are 15 Omega and 20 Omega respectively . Calculate the value of current in the circuit.

The reactance of a capacitor in an A.C. circuit is 10Omega . If the frequency of A.C. is doubled, its reactance will become

Statement (A) : The reactance offered by an inductance in A.C . Circuit decreases with increase of AC frequency Statement (B) : The reactance offered by capacitor in AC circuit increases with increase of AC frequency.

What is the capacitive reactance of a capacitor of 5μF at a frequency (1) 50 Hz and (2) 20KHZ?

Find capacitive reactance of a capacitor connected to a dc source.

The capacitivie reactance of a condenser of capacitance C is

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. The reactance of capacitor at 50Hz is 10Omega. What will be its reacta...

    Text Solution

    |

  2. Power factor of the AC circuit varies between

    Text Solution

    |

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

    Text Solution

    |

  4. The graph between inductive reactance and frequency is

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  9. The powerr factor in CR circuit is given by

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  12. Two electric appliances of power rating W(1) and W(2) t 240 V are conn...

    Text Solution

    |

  13. The rms value of alternating current which when passed through a resis...

    Text Solution

    |

  14. The applied emf lags behind the current by an angle of 45^(@) in the c...

    Text Solution

    |

  15. The values of current and voltage in an AC circuits are respectively I...

    Text Solution

    |

  16. Pure inductors each of inductance 3 H are connected as shown in figure...

    Text Solution

    |

  17. Which one of the follwing represents the variation of capacitive react...

    Text Solution

    |

  18. Which of the following curves represents the variation of impedence (Z...

    Text Solution

    |

  19. The phase angle between current and potential difference in an AC circ...

    Text Solution

    |

  20. Electric power is transmitted over long distances through conducting w...

    Text Solution

    |