Electric circuits proplem

Discussion in 'Homework Help' started by tinhnho, Aug 31, 2004.

  1. tinhnho

    Thread Starter Active Member

    Aug 31, 2004
    34
    0
    hi everyone

    i really need help with this proplems,i totally stuck from begin.

    Given: R1= 2 ohm, R2 =1 ohm, R3= 3 ohm, R4= 2 ohm, R5 = 3 ohm, R6 =3 ohm
    1. The voltmeter in the figure give a reading of v =1 V,and the resistances are given. Use the KCL and KVL to determine what the source woltage Vs must be in order to get this measured result. You will need to use both KVL and KCL, one node at a time or one branch at a time

    p/s: sorry that my hand drawing picture

    KCL = Kirchhoff's current law
    KVL= Kirchhoff's voltage law
    Vs= voltage source
    Is= current source

    Here is the Answers:
    Vs= 20.666667
    v1 = 6 ( where R1, R2, R3 join)
    v2= 2 (where R3, R4, R5 join )
     
  2. haditya

    Senior Member

    Jan 19, 2004
    220
    0
    can u post the circuit diagram
     
  3. nithin

    Member

    Aug 27, 2004
    15
    0
    defintely need the circuit diagram... because it doesn seem to be a ladder circuit or have you rounded off the values of v1 and v2
     
  4. nithin

    Member

    Aug 27, 2004
    15
    0
    you got to first find the equivalent impedence ..... so the current
    I=(11*Vs)/31

    V1=(9/11)*I (by current division)...

    V2=(3/22)*I....

    v=1=(3/22)*I...

    you have to first find I and then substituting .. ull get the reqd. answers
     
  5. Iwan

    Member

    Jul 14, 2004
    23
    0
    May I see the circuit?
     
  6. tinhnho

    Thread Starter Active Member

    Aug 31, 2004
    34
    0
    sorry that i didn;t post the diagram, Anyway i figured out how to solve the proplem,thank you
     
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