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Homework Help: Hat is the potential difference between X and 65cm mark in the circuit

  1. May 10, 2008 #1
    1. The problem statement, all variables and given/known data
    http://img152.imageshack.us/img152/696/1005200802ps4.png [Broken]
    The wire XY in the circuit is made of a material of high resistivity and uniform area of cross-section. What is the potential difference between X and 65cm mark in the circuit?

    2. Relevant equations

    3. The attempt at a solution

    [tex]\frac{65}{100} \times 2 = 1.3V[/tex]

    Is this correct?
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. May 10, 2008 #2
    i think 2 x 65/165 if not misunderstood, the whole length 165 cm.
  4. May 10, 2008 #3
    The length of the wire is 100cm. and on that wire the mark is 65cm. Is my answer correct?
  5. May 10, 2008 #4


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    Staff Emeritus
    Science Advisor
    Homework Helper

    If the high-resistivity wire is just between X and Y, then yes it's 1.3 V.
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