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Homework Help: Find the Phase Angle Help

  1. Mar 11, 2010 #1
    Hi , there is a circuit with AC voltage with a resistor followed by a capacitor in series, and at frequency 1760 Hz I need to know phase angle, the peak to peak separations for the voltage source to the voltage across the capacitor is 15 ms...how do I find the phase angle?

    I already found it theoretically using arctan (wRC), but I'm not sure how to do it practically.

    Last edited: Mar 12, 2010
  2. jcsd
  3. Mar 12, 2010 #2
  4. Mar 13, 2010 #3


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    Staff Emeritus
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    Compare the 15 ms to the time for a full oscillation period.

    If the 15 ms were one-half of a period, then the phase angle is 180°.
    If it's a quarter of a period, the phase s 90°.
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