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That seems pretty excessive, IIRC if there's not a really long linear length of wire involved (e.g. power lines) then things are probably fine.


This would better prepare them for an Air Burst https://en.wikipedia.org/wiki/Air_burst


Why would long lengths of coiled wire not be affected?


For the same reason that a crumpled up ball of wire is a bad antenna.

To induce an appreciable current, the magnetic field has to act on a wave-compatible portion of the conductor. The length and alignment of the wire has to resonate with the direction and length of the wave.




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