Cheers to anyone who can help me find the voltage in the middle of this circuit

Discussion in 'Homework Help' started by Withering, Apr 1, 2018.

  1. Withering

    Thread Starter New Member

    Mar 25, 2018
    8
    0
    Question 6.png

    Starters, tips, anything. Literally don't know where to start with this. Have tried going through a whole set of videos... https://www.youtube.com/playlist?list=PLX2gX-ftPVXW6bFHC_a2wsp7kJgWyeaT0 | Not progressing with this problem, now.

    Haven't been taught techniques such as mesh analysis and the like; so, this probably can't be too hard. Problem is I can't find a similar example to use.
     
    Last edited by a moderator: Apr 1, 2018
  2. ericgibbs

    Moderator

    Jan 29, 2010
    7,678
    1,547
    hi W,
    Tip. Work out the ratio of the two vertical resistive elements in the circuit.
    What do you make that ratio.?
    E
     
    Last edited: Apr 1, 2018
  3. LesJones

    Well-Known Member

    Jan 8, 2017
    2,061
    611
    I would suggest starting by working out the voltage across the terminals of the 18 mA current source.

    Les.
     
  4. danadak

    Distinguished Member

    Mar 10, 2018
    2,900
    628
    When you "measure" voltage (Vo) typically that assumes that that
    as shown there is no current being drawn by the "measurer". So
    there is no voltage drop across the 2K or 4K.

    Rest of the problem is simple current divider and once each leg current
    is known then compute voltage drop across either bottom Rs or top Rs
    to get at Vo.

    Regards, Dana.
     
  5. WBahn

    Moderator

    Mar 31, 2012
    24,082
    7,476
    You don't need mesh analysis or anything of the sort.

    You are trying to tackle the entire problem at once. Instead, break it down into little problems.

    Do you know how to do current division?

    Can you solve the following problem to find Ia and Ib?

    Bridge.png
     
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