1. Limited time only! Sign up for a free 30min personal 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!

Self Inductance

  1. Mar 2, 2009 #1
    1. The problem statement, all variables and given/known data
    Show that the self-inductance per unit length of a wire of radius R carrying a uniform current density inside, the current returning along the surface of the wire is μ0/8π.

    3. The attempt at a solution
    I thought that it might be simpler to calculate the self inductance by 1st calculating the energy stored in the magnetic field round the wire.

    W = (LI^2)/2 = (1/2μ) ∫ B^2 dV.

    I guess the question implies that the wire forms a circle ( since radius is mentioned ). Now I have problems finding B. I can find B easily in the center of the circle or on axis through the center, but surely I need to find it outside of the circle as well... how do I proceede from here, or do I need to employ a different method.
    Thanks is advance!
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Discussions: Self Inductance
  1. Self inductance (Replies: 1)