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Pipe or coil in generators

  1. Mar 28, 2017 #1
    I understand you can induce an electrical current by passing a magnet through a copper pipe. If so, why do generators (and motors for that matter) use coils in stead? Do coils allow a stronger current or greater efficiency?
    Where can I go to find out the most energy-efficient design for a generator I can build at home?
  2. jcsd
  3. Mar 28, 2017 #2


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    There's a couple of significant reasons
    a hint for one of them .... what is the difference between a pipe and a wire ?

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