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Electricity from radio waves

  1. Jan 10, 2008 #1


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    Let's say that you make a huge (radius of a few meters) coil of wire. Will radio waves cause a current to run through it? If so then how much?
  2. jcsd
  3. Jan 10, 2008 #2
    Yes current will be induced in the coil, probably less then a nano-amp.
  4. Jan 11, 2008 #3


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    This is how old crystal radios work. You don't need a battery to run them if the antenna is big enough.
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