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: Four electric currents

  1. Aug 9, 2010 #1
    1. The problem statement, all variables and given/known data

    Four electric currents, equal in magnitude are arranged at the corners of a square as shown in the figure.

    Two currents go into the page, and two are pointing out of the page. Point a is at the center of the square, and points b and c are in the middle of two of the sides. What is the direction of the magnetic field at points a, b, and c?

    3. The attempt at a solution
    I am really clueless, but I would guess a is zero. b and c point north.
    Last edited by a moderator: Apr 25, 2017
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

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