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!

Does diameter of air coil in electromagnet affect strength?

  1. Jan 18, 2016 #1
    The title is explanatory. I know that an iron core yields a stronger electromagnet. What if you have an electromagnet with an extremely tiny air coil relative to its volume? Does the small air coil diameter effect the electromagnet?
  2. jcsd
  3. Jan 19, 2016 #2


    User Avatar
    Gold Member

    The small coil, with the wire wrapped tightly around the iron core, will give a stronger magnet because nearly all the field of the coil passes through the iron. With a large diameter coil, much of the field does not pass through the iron - there is more leakage.
  4. Jan 19, 2016 #3
    That makes sense, but what about air coils? If I don't have an iron coil but rather an air coil. Does having an extremely small air coil diameter (like almost no air coil whatsoever) affect the magnet strength?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Does diameter of air coil in electromagnet affect strength?
  1. Electromagnet strength (Replies: 8)