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Homework Help: Need some help with electricmagnetism

  1. May 7, 2009 #1
    Hey so i'm doing a class project involving a sort of generator device. The device will be a RC car wheel with very strong but but small magnets that each have a magnetic field of 3200 guass and then next to it will be a donut like wheel with magnet wire wrapped around it in the oppisite direction so when the wheel spins on the RC car it will generate electricty .The problem i need help with though is i don't know how thick i should make the donut/wheel to wrap the coil around so i generate atleast 12 volts from it. i can give you any other additional information you might need but can someone please help me or give me a formula
  2. jcsd
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