TWO RESISTORS IN PARALLEL

Discussion in 'Homework Help' started by omerysmi, Jan 28, 2015.

  1. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    I have to find the total resistance in this circuit:

    [​IMG]
     
  2. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
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    hi,
    What do you think it is.??
    E
     
  3. Jony130

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    Feb 17, 2009
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    And your answer is ??
     
  4. MrChips

    Moderator

    Oct 2, 2009
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    Careful - this is a trick question.
     
  5. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    I think it is zero
     
  6. Jony130

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    Feb 17, 2009
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    Find Rt for this values R1 = 1000Ω and R2=0.1Ω
    Also do you understand what infinity resistance means?
     
  7. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    So what is the answer?
     
  8. Jony130

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    Feb 17, 2009
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    Rt = 1/(1/R1 + 1/R2) = (R1*R2)/(R1 + R2) = (1000Ω * 0.1Ω)/(1000Ω + 0.1Ω) = 0.0999Ω

    So for your example the answer will be ?
     
  9. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    1k
     
  10. Jony130

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    Feb 17, 2009
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    Are you sure ??
     
  11. omerysmi

    Thread Starter Member

    Oct 10, 2014
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    the 1k is like the 0.1ohm in your example so it should be 1k
     
  12. MrChips

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    Oct 2, 2009
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    The question asks "what is the total resistance in the circuit?"

    not "what is the equivalent resistance in the circuit?"
     
  13. Jony130

    AAC Fanatic!

    Feb 17, 2009
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    Yep, I just checking you.
    I do not see any difference between total resistance and equivalent resistance. They are not the same?
     
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