1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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 !

    Attached Files:

    • 1.jpg
      File size:
      21.8 KB
  2. jcsd
  3. Mar 10, 2008 #2
    anyone ?
  4. Mar 10, 2008 #3


    User Avatar
    Homework Helper

    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


    User Avatar
    Homework Helper

    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 ???
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook