1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Phase of curcuit

  1. Dec 4, 2013 #1
    1. The problem statement, all variables and given/known data

    I have an AC RLC circuit with the inductor in series with parallel capacitor and resistor.

    At what w is the emf in phase with the current?

    2. Relevant equations



    3. The attempt at a solution

    I'm suppose to know this from a previous class but as a transfer student my classes never dealt with phase or RLC circuits. Any help would be phenomenal.

    The question is specifically asking if ##w=\frac{1}{\sqrt{LC}}##
     
  2. jcsd
  3. Dec 4, 2013 #2
    What exactly within an electrical system causes the phase of the current to differ from the phase of the voltage?
     
  4. Dec 4, 2013 #3
    The inductor resists changes in current so voltage changes happen more quickly and vice versa at the capacitor. (I just discovered ELI the ICE man). So, would this mean that the peak would happen every 90 degrees? How would I relate the angle to w?
     
  5. Dec 4, 2013 #4
    The phase of the current will differ from the phase of the voltage if there is reactance present within the network. If the voltage and the current are completely in phase with one another, it implies that the load is completely resistive (imaginary portion of the impedance is zero). Do you know how to calculate the impedance of a capacitor and inductor?
     
  6. Dec 4, 2013 #5
    I see you found my other post! I'll discuss this there.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Phase of curcuit
  1. Phase space (Replies: 1)

  2. Resonance in phase (Replies: 2)

  3. Phase space (Replies: 8)

Loading...