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!

Need help with iron solenoid/core for an electromagnet?

  1. Nov 4, 2012 #1
    i'm making an electromagnet with a battery, some copper wire, and a iron solenoid/core. For the core i'm using is a magnetic spoon, i was just wondering, will it work?

    here's a picture, http://img706.imageshack.us/img706/9348/spoont.jpg [Broken] , i'm not done wrapping the wire

    basically it's either the spoon, or a magnetic nail the size of my finger
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Nov 4, 2012 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF;
    You will certainly have an electromagnet once the current is going - you may want to check the resistance to see what sort of current to expect. That will give you an idea of the likely magnetic field.

    Apart from that, it depends on what you mean by "work": what do you hope it will do?
  4. Nov 4, 2012 #3
    A quick hint: the more you wind it, and the tighter you wind it, the stronger the magnetic field will be.
  5. Nov 5, 2012 #4


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    If you want to make a good electromagnet, you can't beat the iron fomer you can get out of an old chuckout transformer. A bit of a struggle to strip it apart but it could be well worth the effort.
    Most of the 'iron' you find around the place is, in fact, steel, which tends to stay magnetised once you turn off the current and you may not want that. Transformers have 'soft iron' which is just what you want.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook