Resonant frequency
Last Post 16 Oct 2014 11:25 AM by Arifa Anees. 1 Replies.
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bapun mishra
New Member
New Member

14 Oct 2014 11:54 AM
    Which of the following coil will have large resonant frequency ?
    a)A coil with low distributed capacitance..
    b)A coil with large distributed capacitance.
    c)A coil with large resistance.
    d)A coil with low resistancee.

    Answer is B

    Resonant frequency, fo, is
    f_o = \frac {1} {2 \ pi \ sqrt {LC}} .

    Then how increasing capacitance leads to large resonant frequency..
    Arifa Anees
    New Member
    New Member

    16 Oct 2014 11:25 AM
    In a series RLC circuit there becomes a frequency point were the inductive reactance of the inductor becomes equal in value to the capacitive reactance of the capacitor. In other words, XL = XC. The point at which this occurs is called the Resonant Frequency point, ( ƒr ) of the circuit, and as we are analysing a series RLC circuit this resonance frequency produces a Series Resonance

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