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: Magnetic field in a infinitley long wire

  1. Nov 12, 2009 #1
    1. The problem statement, all variables and given/known data
    An infinitely long wire lies along the z axis and carries a current of 12 A in the positive z direction. A second infinitely long wire is parallel to the z axis at x = 8.2 cm.

    a.)Find the current in the second wire if the magnetic field at x = 1.6 cm is zero.
    b.)What is the magnetic field at x = 5 cm?

    2. Relevant equations

    3. The attempt at a solution
    I am lost with this one.
  2. jcsd
  3. Nov 12, 2009 #2


    User Avatar
    Homework Helper

    What is the relevant equation for the field due to current carrying infinite long wire?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook