On Thu, Mar 29, 2018 at 12:25 PM, Skyler Gordon <skgor1@gmail.com> wrote:
I believe a 9V battery can provide current sufficient to produce a strong magnetic field - depending on how much copper you used.
I thought field strength was proportional to current, independent of how thick the wire is (or what the metal was). (sure thinner wire will get hotter faster, and may break... but that's another concern I think)
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