this post was submitted on 08 Jul 2023
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I tried to make an electromagnet at home but when I connect the two copper wires to a 1.5V battery it keeps short circuiting and heating up. Also it doesn't attract other nails. (lemmy.world)
submitted 1 year ago by [email protected] to c/[email protected]
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This is my electromagnet.

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[–] [email protected] 3 points 1 year ago

In my experience a large 1.5v D cell works best, as the limiting factor is generally current not coil resistance, unless you wind thousands of turns of fine wire.