Total resistance in parallel/serial hybrid circuit

Discussion in 'Homework Help' started by Ulfalizer, Jul 10, 2005.

  1. Ulfalizer

    Thread Starter New Member

    Jun 29, 2005
    5
    0
    How do I calculate the total resistance in the following circuit? I can't find any way to break it up into strictly parallel, serial parts while keeping the resistor terminals that should be electrically common so.

    Code ( (Unknown Language)):
    1.  
    2.  |----------------|
    3.  |        |
    4.  |       /  \
    5.  |       /   \
    6.  |      r1    r2
    7.  |      /     \
    8. v1     |-----r3-----|
    9.  |      \     /
    10.  |      r4    r5
    11.  |       \   /
    12.  |       \  /
    13.  |        |
    14.  |----------------|
    15.  
    The r components are resistors and the v component is a voltage source. Make up whatever numbers you wish for the voltage and resistances, I'm only interested in how you solve it.

    Any help appreciated,
    Ulf
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Hi Ulfalizer,

    You have come to a great place to pose that question. AAC has a terrific tutorial on this very subject. One way to solve this type of problem is to use the wye-to-delta conversion. This technique is well covered in the tutorial. Just follow the link below to access the material.

    Y to delta conversion

    hgmjr
     
  3. Ulfalizer

    Thread Starter New Member

    Jun 29, 2005
    5
    0
    Thanks! Those equations weren't even that hard to derive from the fact that the resistance between any two terminals should be the same in both forms. Not that I would have thought of it in the first place :)

    Ulf
     
  4. abbas_6007

    New Member

    Sep 7, 2009
    5
    0
    Hello.
    i am a new member and i want to give u answer frm my mind.
    first multiply all the resistance and then get LCM of it then u will get a parrallel equation, putting all the resistances values in that equation.
    reply me if some problem occur.
     
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