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Homework Help: Using nodal find out v1 and v2

  1. Aug 10, 2009 #1
    hi dears,

    kindly tell me the complete procedre to find out the v1 and v2

    v1= -145/8

    v2 = 5/2

    I have tried it and I reach here

    Apply Source transformation theorem.The 5A and 3ohms &2 ohms are converted into single voltage source 25V ( 5A*3+2) in series with 5ohms(3+2).But the positive terminal connected to ground pin.
    Similarly 2A and 4ohms are converted into single voltage source 8V( 2A*4ohm) in series with 4 ohm resistor

    hhow to go more further I am confuse and am until here am I right or wrong

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    Last edited: Aug 10, 2009
  2. jcsd
  3. Aug 10, 2009 #2


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    Welcome to Physics Forums!

    You'll probably get more benefit out of Physics Forums if you become more familiar with the forum rules. Scroll down to the section on Homework Help here:


    In particular, note that it says:

    Hope that helps! Show an attempt at solving those homework problems, and then people will be willing to help out.
  4. Aug 11, 2009 #3

    The Electrician

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    Your subject line says "using nodal". This problem is easy to solve using the nodal method, and you shouldn't do any source transformations.

    Do you know what Kirchoff's current law (KCL) is?

    What you need to do is write the KCL equations for the two nodes. If you will make an attempt to do that and show your work, then you will get some more help if you need it.
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