gravitational force magnetic force electric force friction force
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student wraps a wire around an iron nail. The student then connects the wire to a battery. The nail attracts another nail and they stick together. What force holds the two nails together?
Possibilities:
- gravitational force
- magnetic force
- electric force
- friction force

magnetic force