Yes. A huge spike will be more powerful than a #10 finishing nail. The current flow has more to do with it, but the size matters.
where have I heard that before?Does the size of a nail affect the power of a electro magnet?
no, it has to do with the amount of wraps around the nail, and the power source. A bigger spike would be easier but if you could use the same power source and the same wraps you would have the same magnetDoes the size of a nail affect the power of a electro magnet?
Current is more than anything in an electromagnet. Yes a larger nail does help because of the increased surface area.
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