1. Not finding help here? Sign up for a free 30min 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!

Magnetic vector potential of finite wire

  1. Jun 6, 2012 #1
    1. The problem statement, all variables and given/known data
    The problem statement is attached.

    3. The attempt at a solution
    I know how to solve the problem. However, my teachers solutions notes and my book's do it differently, and I want to ask what the difference is, so I have attached them both. My book does it the way I did it. My teacher's however introduces a dummy variable z', which is integrated over rather than z. Thus we end up with an expression that actually contains z. What is geometrically the difference between these two solutions? Clearly in my book's solutions the origin is placed a distance z1 below the wire - where is the origin in my teachers note's?

    Cheers :)
     

    Attached Files:

  2. jcsd
  3. Jun 6, 2012 #2

    vela

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    The book's calculation finds the vector potential in the xy-plane, at a point a distance s from the origin. Your teacher's calculation is more general. It finds the vector potential for any z. If you set z=0 in his or her solution, you'll get the book's solution.
     
  4. Nov 20, 2013 #3
    I do not understand, how can we do this only in the xy-plane, doesn't the vector field also depends on z? I think the textbook solution is wrong because we have to consider z dependence but not simply set it to 0.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Magnetic vector potential of finite wire
Loading...