### Discussion :: Passive Filters - General Questions (Q.No.2)

Shrutali said: (Sep 1, 2011) | |

How to find critical frequency in this problem ? |

Asha said: (Oct 15, 2011) | |

Critical frequency=R/2*PIE*L |

Shankarling.Patil said: (Apr 27, 2012) | |

What is critical frequency. Please tell me friends. |

Naga Mallesh said: (Jul 27, 2012) | |

When R = XL its called critical frequency. |

Shahul said: (Apr 5, 2013) | |

Critical frequency/Bandwidth = R/ (2*3. 14*L). |

Jon said: (Sep 22, 2013) | |

Using R = XL. Then R = 2*pie*freq*L. Freq. = R/(2*pie*L). = 3300/(2*3.1416*.0056). Freq. = 93,787 Hz or 93.8 KHz. |

Pesce said: (Apr 26, 2015) | |

Critical frequency is a frequency at which I is maximum in RLC circuit. i.e, when R=sqrt (XL*XL-Xc*Xc). Here, Xc = 0 (since RC ckt). So. R = XL. But XL = 2*pie*f*L. Hence R = 2*pie*f*L. F = R/2*pie*L. |

Mshal said: (Feb 15, 2016) | |

At Resonant state of series RLC circuit, Z = R = (XL-XC). Since R & L are given, R = XL but XL = 2*π*F*L. Therefore 3.3k ohms = 2*3.1416*F*5.6 millihenry; F = 93.78 HZ. |

Sana said: (Jul 8, 2016) | |

Is critical and cut off frequency are same? |

Sonu Kumar said: (Apr 1, 2018) | |

F =R/2πL, = 3300/2*3.14*.0056, = 3300/6.28*.0056, = 33*10^8/628*56, = 33*10^8/35168, = 93835hz or, = 93.8khz. |

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