I'm trying to build a homemade electromagnet to show my son. I took speaker wire and wrapped it around a stick maybe about 40 times. Then I used a C cell battery to power it, however I saw no magnetic effect when I exposed it to some screws.
- Is a C cell battery not enough power for this?
- Is speaker wire okay for this kind of application, or should I use magnet wire?
- Should I get longer wire to have more coils?
Thanks for any suggestions.