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Proper ammeter connections

  1. Mar 10, 2008 #1
    1. The problem statement, all variables and given/known data
    In which diagram(s) (labeled A - D) does the ammeter correctly measure the current through the battery?

    3. The attempt at a solution

    I know that ammeters measure the current in series, and that the voltmeter wont have any effect on its reading, but i'm confused about the digram A

    I would say that its image A and D, but i'm not sure how A would work

    any help would be appreciated guys !
     

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  3. Mar 10, 2008 #2
    anyone ?
     
  4. Mar 10, 2008 #3

    rock.freak667

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    Attachments take a while to be approved, upload it on imageshack and then upload the link here
     
  5. Mar 10, 2008 #4
  6. Mar 10, 2008 #5

    rock.freak667

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    ok assuming that the voltmeter and ammeter are ideal. The voltmeter will have infinite resistance. What does that mean for a current passing through the voltmeter?
     
  7. Mar 12, 2008 #6
    ahhh, it'll go down to zero ...thanks !!

    one more thing, when will the voltmeter read zero ???


    i'm thinking since it measures potential between two points it will be zero wherever there is a clear path between the two points: "D" ... sounds right ???
     
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