### Discussion :: Passive Filters - General Questions (Q.No.9)

Manikandan said: (Sep 10, 2012) | |

Capacitive reactance xc= 1/ ( (2* (22/7) fc. |

Ian Glenn said: (Jul 28, 2013) | |

fc = 1/(2*pi*R*C). = 1/(2*3.1416*120*.002x10^-6). = 633khz. |

Joseph said: (Nov 27, 2013) | |

a) In order to find the critical frequency what is the need of including resistance (fc = 1/(2*pi*R*C)). b) We can easily find the critical frequency as xc= 1/ ( (2* (22/7) fc. What is the correct method we need to follow? |

Mathews said: (May 30, 2017) | |

Hi, I am getting 663.481khz. Can anyone help me to get the correct solution? |

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