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Magnetic field due to coil (induced emf)

  1. Mar 10, 2009 #1
    1. The problem statement, all variables and given/known data
    Suppose you wrap wire onto the core from a roll Nof cellophane tape to make a coil.
    Describe how you can use a bar magnet to produce an induced voltage in the coil.
    What is the order of magnitude of the emf you generate? State the quantities you
    take as data and their values.


    2. Relevant equations

    Emf = -N (d"Phi"/dt)

    3. The attempt at a solution

    I know that in order to induce a current I can insert the magnet in the hole of the coil and move it in order to produce magnetic flux, so therefore I have current. I guess I just don't really understand what the next two parts of the question are saying. Thanks for the help!
     
  2. jcsd
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