Home
Class 12
PHYSICS
With increase in frequency of an AC supp...

With increase in frequency of an `AC` supply, the capacitive reactance:

A

varies inversely with frequency

B

varies directly with frequency

C

varies directly as square of frequeny

D

remains constant

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    RESONANCE|Exercise Exercise -2 Part-1|14 Videos
  • ALTERNATING CURRENT

    RESONANCE|Exercise Exercise -2 Part-2|6 Videos
  • ALTERNATING CURRENT

    RESONANCE|Exercise Problem|14 Videos
  • ATOMIC PHYSICS

    RESONANCE|Exercise Advanved level problems|17 Videos

Similar Questions

Explore conceptually related problems

With an increase in the frequency of an AC supply the capacitive reactance

With increase in frequency of an AC supply, the inductive reactance:

Statement (A) : With increase in frequency of AC supply inductive reactance increases. Statement (B) : With increase in frequency of AC supply capacitive reactance increase

Define capacitive reactance

Which increase in frequency of an AC supply , the impedance of an L-C-R series circuit

A 2 muF capacitor is connected across an AC power supply . Calculate the frequency of the supply if the capacitive reactance of the capacitor is 10 Omega .

In a pure capacitive circuit if the frequency of ac source is doubled, then its capacitive reactance will be

If the frequency is doubled, what happens to the capacitive reactance and the current?

Statement I : In series LCR circuit , the resonance occurs at one frequency only. Statement II : At this frequency, inductive reactance is equal to capacitative reactance.

RESONANCE-ALTERNATING CURRENT-Exercise -1 Part-1
  1. An alternating voltage E=200sqrt(2)sin(100t) is connected to a 1 micro...

    Text Solution

    |

  2. When 100 V DC is applied across a solenoid, a steady current of 1 A fl...

    Text Solution

    |

  3. In an LCR series ac circuit the voltage across L,C and R are V(1), V(2...

    Text Solution

    |

  4. In the series L-C-R circuit , the voltmeter and ammeter readings are

    Text Solution

    |

  5. In a series LCR circuit, at resonance, power factor is …….. .

    Text Solution

    |

  6. A series LCR circuit containing a resistance of 120 ohm has angular re...

    Text Solution

    |

  7. In an LCR circuit, the capacitance is made one-fourth, when in resonan...

    Text Solution

    |

  8. A resistor R,an inductor L, and a capacitor C are connected in series ...

    Text Solution

    |

  9. A resistor R, an inductor L, a capacitor C and voltmeters V(1),V(2) an...

    Text Solution

    |

  10. A power transformer (step up) with an 1:8 turns ratio has 60 Hz,120 V ...

    Text Solution

    |

  11. A transformer is used to light a 140 W, 24 V lamp from 240 V AC mains....

    Text Solution

    |

  12. In a step-up transformer the voltage in the primary is 220 V and the c...

    Text Solution

    |

  13. The core of a transformer is laminated to reduce

    Text Solution

    |

  14. A capacitor becomes a perfect insulator for

    Text Solution

    |

  15. A choke coil has.

    Text Solution

    |

  16. A choke coil is preferred to a rheostate in AC circuit as

    Text Solution

    |

  17. With increase in frequency of an AC supply, the inductive reactance:

    Text Solution

    |

  18. With increase in frequency of an AC supply, the capacitive reactance:

    Text Solution

    |

  19. An ac ammeter is used to measure currnet in a circuit. When a given di...

    Text Solution

    |

  20. In an a.c. circuit consisting of resistance R and inductance L, the vo...

    Text Solution

    |