homework question #5

Discussion in 'Homework Help' started by cgeorge5150, Oct 8, 2009.

  1. cgeorge5150

    Thread Starter New Member

    Oct 8, 2009
    9
    0
    Determine the values of teh potentials at points A, B, C, D.

    working counter clockwise and following polarity, I added 10V and 8V to get Vtotal of 18V. At point D V=18V.
    I=V/Rtotal or 2.7mA. V=I*R for each resistor voltage drop. Point C 7.29V. Point B 5.94V, and Point A 4.86V.
     
    Last edited: Oct 8, 2009
  2. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,157
    You might want to consider where you place the black lead (common) of your meter.
     
  3. hobbyist

    Distinguished Member

    Aug 10, 2008
    764
    56
    As stated above, you are giving the voltage drops, but when asked to give the voltage at a single point in a circuit, using one letter designation, than it will always be refrenced to a common point, usually ground terminal, unless otherwise stated differently.

    Hint: algebraically add the voltage drops starting at the common point.
     
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