Current Flow

Discussion in 'Homework Help' started by evowerke.com, Mar 21, 2007.

  1. evowerke.com

    Thread Starter New Member

    Mar 21, 2007
    1
    0
    a) What is the current through the R1 resistor?
    b) If R2 has been changed to 10Kohms, Calculate the current I1 now.
    c) If I1 = 1 microamps is required when R2 is 10kohms, determine the value of R1

    [​IMG]



    i need some refreshing on my circuits and can anyone help me with my hw


    for the first question (a) would the following work? :


    I1 = V/R1

    10v/1kohm = 10mA

    for question (b) would the following work? :

    I1 = V/ R2+R1

    btw

    thank you very much :D
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Leave R1 out of circuit. Look at the potential between the points it connects to and think about what happens when R1 goes back in circuit. Make the change for R2 and look at what has happened to the potential between those points again.
     
  3. Distort10n

    Active Member

    Dec 25, 2006
    429
    1
    Balanced Bridge. Nuff' said.
     
  4. Great_khaled

    New Member

    Mar 26, 2007
    2
    0
    yes beenthere your answer like mine
     
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