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!

Homework Help: Sources of Magnetic Fields

  1. Jul 19, 2009 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations
    1) B_x = (µ_0 * I) / 2R at x = 0

    3. The attempt at a solution
    I know that segments BC and DA do not contribute to the magnetic field at O so all I need to know is the contribution for segments AB and CD. Using equation one, I simplified the formula to ((µ_0 * I) / 2) * ((1/0.6) +(1/0.4)).
    Last edited by a moderator: Apr 24, 2017
  2. jcsd
  3. Jul 19, 2009 #2


    User Avatar
    Homework Helper

    The relevant equation is for the circular conductor.
    Ηere you have to use
    B = μ_o/4π*Ι*L/R^2.
    Since angle subtended by the segments at the center is π/3, you can find the lengths of the segments by using the formula L = R*θ
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook