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!

Core in an electromagnet

  1. May 31, 2015 #1


    User Avatar

    Hello everyone,

    I read somewhere that it is preferable to use insulated iron wires instead of a single iron core inside an electromagnet.
    Anybody has an idea on why is that and what difference does it make to use each?

    Thanks in advance.
  2. jcsd
  3. May 31, 2015 #2
    You want the core to become magnetized, but you do not want to induce Eddy currents in the metal of the core. Eddy currents are much smaller in a bundle or stack of small, insulated wires or plates than in a big chunk.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook