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Homework Help: Phase Delay of capacitor's voltage

  1. Sep 11, 2008 #1
    Does anyone know why increasing the frequency of a RC circuit increases the phase delay in the capacitor's voltage (with respect to the voltage of the source)?
    I understand that the amplitude decreases because the impedance increases but I don't understand why the phase delay increases :S

    Any help would be appreciated :)
  2. jcsd
  3. Sep 11, 2008 #2


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    An RC circuit has a complex impedance that depends on frequency. As frequency changes, the modulus and phase of the impedance changes too.
    Write the complex impedance and calculate both modulus and phase.
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