The science fair is coming and I am nervous at what kind of questions the judges are going to ask. Can you guys ask me some questions you think they might ask?
I am basically done with my science fair project about which factor affects the strength of an electromagnet the most. The 4 factors I used are number of coils, voltage of power source, diameter of core, and thickness of the wire. I basically just started with one factor and did experiments with that and moved on to the next one.
I am in high school.