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Equivalent resistance

  1. Jan 13, 2015 #1
    1. The problem statement, all variables and given/known data
    upload_2015-1-13_16-23-45.png
    Calculate the equivalent resistance between A and B.



    2. Relevant equations


    3. The attempt at a solution
    I solved this problem by using wye-delta transformation. Is there any other method to solve this? The speciality in this circuit, I noticed, two of resistances are 0.
     
  2. jcsd
  3. Jan 13, 2015 #2

    BvU

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    Yes there is. Look at the square on the right. They try to confuse you by drawing it this way, but if you flip down the upper half, you see that the four 4 ##\Omega## resistors are in fact all ...
     
  4. Jan 13, 2015 #3
    upload_2015-1-13_19-46-52.png
    So, I can think C and E as the same point. D and F are the same point too. So, I can change this circuit intothis one:
    upload_2015-1-13_19-55-4.png

    Am I right?
     
  5. Jan 13, 2015 #4

    BvU

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    That's the idea, yes.
     
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