Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Find the value of Vx and power dissipated

  1. Jun 23, 2011 #1
    1. The problem statement, all variables and given/known data
    I'm looking to find the value of Vx and power dissipated or provided by the dependent source.


    2. Relevant equations

    I used KVL to get around the loop, but I'm not sure if that's correct.

    3. The attempt at a solution

    The main loop I get 10+3Va+10kI = 0.

    No clue what to do next. I keep thinking left and right loop, but I already see 4 unknowns 3 equations. Unless I need a junction where I1=-I2. I just don't get it.
    Please help, or get my on the right track.
    Last edited: Jun 23, 2011
  2. jcsd
  3. Jun 23, 2011 #2


    User Avatar
    Homework Helper
    Gold Member

    Re: Sources

    Your equation looks okay. One equation, 2 unknowns. You need another one. Consider expressing VA in terms of the 10K resistor and I.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook