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Homework Help: Did i add up these Ressitors right?

  1. Oct 27, 2005 #1
    Hello everyone, i'm suppose to find the current and potential difference, I did a smilar problem to this that Chi helped me on, and it worked out, i applied the same method but didn't work out right. Here is the question and under it is my work:

    Question:
    the ammeter and voltmeter resistances are 2.00 and 268 , respectively. Take E= 12.0 V for the ideal battery and R0 = 119 .

    Picutre of Figure b: http://www.webassign.net/hrw/28-40b.gif

    (a) If R = 93.0 what will the meters read for the two different connections (Figs. 28-40b)?
    Figure B:

    I = ?A
    Potential Difference = ? V
    work:
    http://img463.imageshack.us/img463/111/lastscan8fp.jpg [Broken]

    Thanks!
     
    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Oct 28, 2005 #2

    daniel_i_l

    User Avatar
    Gold Member

    I only see one connection which is the one in our drawing. anyway, it looks like you pretty much solved it! You know the total I so you just have to find how much of it goes through the R and A (call that I1), and how much goes through V (I2, I1+I2 = I, remember that the I and resistance are inversly related). I1 would be the reading for the ammeter, and I1 times the total resistance of A and R is the reading for the voltmeter.
     
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