Home
Class 12
PHYSICS
If the frequency of alternating e.m.f. i...

If the frequency of alternating e.m.f. is in `L-C-R` circuit, then the value of impedance `Z` will change with log (frequency) as

A

increase

B

increases and then becomes equal to resistance, then it will start decreasing

C

decreases and when it becomes minimum equal to the resistance then it will start increasing

D

go on decreasing

Text Solution

Verified by Experts

The correct Answer is:
3
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    NARAYNA|Exercise Assertion & Reason|14 Videos
  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - I (C.W)|23 Videos
  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - II(H.W)|13 Videos
  • ATOMIC PHYSICS

    NARAYNA|Exercise LEVEL-II (H.W)|14 Videos

Similar Questions

Explore conceptually related problems

The r.m.s value of alternating e.m.f. is

If the frequency of the source e.m.f. in an AC circuit is n, the power varies with a frequency:

If the frequency of the source e.m.f. in an AC circuit in n ,the power varies with a frequency:

As the frequency of an alternating current increases, the impedance of the circuit

The value of alternating e.m.f. is e = 500 sin 100pit , then the frequency of this potential in Hz is –

Resonant frequency is given by (for a series L-C-R circuit)

An alternating e.m.f. is applied to a series L-C-R circuit. If the frequency of the applied e.m.f. is more than the resonant frequency of the circuit then the circuit will act as

At resonance frequency the impedance in series LCR circuit is

When the frequency of AC is doubled, the impedance of an LCR, circuit is

Keeping the source of frequency equal to the resonating frequency of the series LCR circuit, if the three elements L, C and R in are arranged in parallel , show that the total current in the parallel LCR circuit is a minimum at this frequency. Obtain the r.m.s. value of current in each brach of the circuit for the elements and source specified in for this frequency.

NARAYNA-ALTERNATING CURRENT-C.U.Q
  1. In an A.C circuit having resistance and capacitance

    Text Solution

    |

  2. Select the correct options among the following In an R-C circuit (...

    Text Solution

    |

  3. If the frequency of alternating e.m.f. is in L-C-R circuit, then the v...

    Text Solution

    |

  4. An inductor and a resistor are connected in series with an ac source. ...

    Text Solution

    |

  5. An LCR circuit is connected to a source of alternating current. At res...

    Text Solution

    |

  6. The incorrect statement for L-R-C series circuit is

    Text Solution

    |

  7. In series L-C-R resonant circuit, to increase the resonant frequency

    Text Solution

    |

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

    Text Solution

    |

  9. In the non-resonant circuit, what will be the nature of the circuit fo...

    Text Solution

    |

  10. The phase difference between voltage and current in an LCR series circ...

    Text Solution

    |

  11. In an LCR a.c. circuit at resonance, the current

    Text Solution

    |

  12. An inductance L and capacitance C and resistance R are connected in se...

    Text Solution

    |

  13. Consider the following two statements A and B and identify the correct...

    Text Solution

    |

  14. Choose the wrong statement of the following

    Text Solution

    |

  15. The essential difference between a d.c dynamo and an a.c dynamo is tha...

    Text Solution

    |

  16. The unit of impedence is

    Text Solution

    |

  17. The power factor of an AC circuit having resistance (R) and inductance...

    Text Solution

    |

  18. The capacitor offers zero resistance to

    Text Solution

    |

  19. Power factor is defined as

    Text Solution

    |

  20. The core of any transformaer is laminated so as to

    Text Solution

    |