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 - Cavity

  1. Sep 22, 2014 #1
    1. The problem statement, all variables and given/known data
    A long conductive cylinder contains two cylindrical cavities, as shown in the diagram. Find the magnetic field produced at point P just above the surface of the cylinder, the total current in the I and uniform current density over its section.


    2. Relevant equations

    Ampere's law

    3. The attempt at a solution

    I tried to use ampere's law, but I'm a bit confused what I should do.
    I don't know very well what i can do, if someone could help i appreciate.
  2. jcsd
  3. Sep 22, 2014 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    Try to articulate the trouble you are having.

    You know how to find B due to a current in the whole wire right?
    I'm guessing the trouble is the holes - is that correct?
    So apply the superposition principle.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted