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!

Hel again

  1. Jul 17, 2006 #1

    Attached Files:

    • KCL.JPG
      KCL.JPG
      File size:
      12.4 KB
      Views:
      56
  2. jcsd
  3. Jul 17, 2006 #2

    mukundpa

    User Avatar
    Homework Helper

    Did you learned Kirchoff's laws ? Show your work.
     
  4. Jul 19, 2006 #3
    yah i learned it.... but it is the longest solution.... i hate that.... i want the shortest method.... that i found in that site.. can you solve it using that method?

    i put the answer @ my attachment

    here is the solution i've learned

    @node B
    i1 + 12 - i3 = 0
    i3 = i1 + i2 that is for eq. 1

    @loop abefa
    E1 + E2 -15i1 +26i2
    40v + 50v -15i1 +26i2
    90 + 26i2 / 15i1 eq. 2

    @loop bcdeb
    -E2 -E3 -26i2 -37i3
    -50 -60 -26i2 -37i3
    -110 -37i3 / 26i2 eq. 3

    that is the my sample solution ive learnd.... but it is not finish.. like i said; that is the longest solution.... hoping that you understand it.....

    (sorry bad grammar)
     
  5. Jul 19, 2006 #4

    berkeman

    User Avatar

    Staff: Mentor

    You need to set the second two things equal to zero to make them equations. That gives you 3 equations and 3 unknowns -- just solve away. There's not really a quicker way to solve it that I know of, unless you mean using determinants to solve the simultaneous equations. In this circuit, the equations are simple enough that solving with determinants won't save you any time.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Hel again
  1. Question hel;ppp (Replies: 16)

  2. Series againand again (Replies: 4)

  3. HELP (again) (Replies: 5)

  4. Acceleration again (Replies: 9)

  5. Uncertainty Again (Replies: 0)

Loading...