Resistors in AC Circuit

Discussion in 'Homework Help' started by prozac26, Feb 5, 2009.

  1. prozac26

    Thread Starter New Member

    Feb 5, 2009
    2
    0
    Hey guys, I have a problem with a textbook question.

    I have a series AC circuit, with 4 resistors.

    Here are the values:

    AC Source = 30V Peak
    R1 = 1.0 k-Ohm, 16V Peak-to-Peak Drop
    R2 = 5V RMS drop, no resistance value
    R3 = no values given
    R4 = 560 Ohms

    I'm asked to find the RMS value of R3. I'm having trouble with the appropriate equation(s) I have to use.

    Thanks a lot for the help.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Take the RMS value of R1's voltage drop and solve for I. I is the same in all series elements.
     
  3. prozac26

    Thread Starter New Member

    Feb 5, 2009
    2
    0
    OK. Thanks a lot! I managed to figure it out.
     
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