Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Ampère's Law

  1. Mar 5, 2007 #1
    1. The problem statement, all variables and given/known data
    Would someone, please, show me that, if there is no current inside, that:

    [tex]\oint \vec B \cdot d\vec l=0[/tex]

    Please. Thanks. :smile:

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Mar 5, 2007 #2


    User Avatar
    Science Advisor
    Gold Member

    You can do this yourself! First use Stokes's theorem to relate your integral to a surface integral over curl(B), then substitute Maxwell's eqn. for curl(B). Note what happens if J and dD/dt are zero.
  4. Mar 5, 2007 #3
    I do not know Stokes Theorem. :) I am preparing to IPHO.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook