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Homework Help: Ampere's Law Problem

  1. Oct 17, 2013 #1
    1. The problem statement, all variables and given/known data

    Ampere's Law uses the current enclosed in a:
    A) Loop
    B) Surface
    C) Volume

    2. Relevant equations

    3. The attempt at a solution

    I think the answer is C because I often see current in 3-dimensions, that is, it can be into or out of the page as well as up/down and left/right. I don't know for sure, but is my thinking correct?
  2. jcsd
  3. Oct 18, 2013 #2


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    Science Advisor
    Homework Helper

    Hi Yosty22! :smile:
    Hint i]: consider a sphere … is there any difference between the current passing through the volume of the sphere and the current passing through the surface of the sphere?

    ii] Consider two different surfaces whose edges are the same loop …

    what does Ampere's law say about the two currents through those two surfaces? :wink:

    (and anyway, what does Ampere's law say about the magmetic field?)
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