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Homework Help: More RLC troubles

  1. Jun 11, 2012 #1
    1. The problem statement, all variables and given/known data
    http://img69.imageshack.us/img69/1123/85049619.jpg [Broken]

    Got a nasty surprise after finishing the problem and looking at the solutions to see the resistor disappearing at tax time.

    I can't figure out how the resistor disappears, I can only think the people who solved this were looking at a different circuit of sorts.
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Jun 11, 2012 #2


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    Staff: Mentor

    The voltage source is a short circuit (if it's an ideal voltage source), and it's in parallel with the resistor...
    Last edited by a moderator: May 6, 2017
  4. Jun 11, 2012 #3


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    Staff Emeritus
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    It would have been better if the solutions didn't say the LC circuit was disconnected from the voltage source. It's not. The voltage source has to still be there to ensure no current flows through the resistor.
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