The battery gets very warm almost hot. I've tried an insulated wire with a solid copper core a little tough to wind, but doable. I also tried an insulated copper wire made of strands. I don't think our big box stores sell iron nails. I covered almost the whole nail in windings.
It's only picking up 6 paperclips. I don't know how to check the resistance of the wire and I don't have an ammeter. The nail is 6" and steel. How much of the of the nail should be covered with the windings?
Homework Statement
Hi, I've been trying to figure this out for days. I've wrapped an insulated wire that I got at Lowe's around a large metal nail. I then connected it to a knife switch and a 9v battery (per the directions). The nail is supposed to pick up 30 paperclips. I've tried wrapping...