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Electromagnetic Fields

  1. Oct 12, 2008 #1
    Ok, everyone knows what an electromagnet is--the most obvious example being wire coils around a nail through which a charge is passed. If you had a hollow cylinder, and the coils were wrapped around the outside; how would the magnetic field be shaped?

    Illustration (Please assume that there are more coils than shown and that the right side of the cylinder is not slanted.):

    |--> |
    |---> |
    |----> |
  2. jcsd
  3. Oct 13, 2008 #2


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    Homework Helper

    You have what is known as a solenoid. You can easily find B-flux lines for this configuration in most physics or electromagnetics textbooks.
  4. Oct 21, 2008 #3
    Thanks, I have one right in front of me. Is there any difference in the fields of a solenoid and a hollow one?
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