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Still trouble with circuits

  1. Aug 31, 2009 #1
    1. The problem statement, all variables and given/known data
    Interpetation1.jpg

    Find all the unkown R,I's, V's


    2. Relevant equations
    Reg=(R1*R2*R3)/(R1+R2+R3)
    it=i1+i2+i3
    V=IR

    3. The attempt at a solution

    All unknowns:
    R2,R3,i1,i3 it,Vs,V1,V2

    It seems that I need one more bit of information to solve any variables
    i1 goes across R1, i2 goes across R2, i3 across R3
     
  2. jcsd
  3. Aug 31, 2009 #2

    Doc Al

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    Staff: Mentor

    Hint: Since the three resistors are in parallel, what's the voltage across each? (And the battery voltage, for that matter.)
     
  4. Aug 31, 2009 #3
    Since they are parrallel the voltage across each is equal to each other? Vs=V1=V2=V3 is this right?!? Also why is that?
     
  5. Aug 31, 2009 #4

    Doc Al

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    Staff: Mentor

    Last edited by a moderator: Apr 24, 2017
  6. Aug 31, 2009 #5
    Ok thank you knowing this concept this should be an easy one......I have another simple question though.I will post the picture and work in a new thread that I will pm you, can you just come teach my class for me? Your anwsers are so much more simplier then the ones provided by my professor.
     
  7. Aug 31, 2009 #6
    Last edited by a moderator: Apr 24, 2017
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