Maya sets up two experiments as shown. At right labeled Experiment 1 an iron bar with 5 thick wire loops around it. At left labeled Experiment 2 an iron bar with 5 think wire loops around it.

What question is Maya most likely trying to answer?

How does the type of material used in the core affect the strength of an electromagnet?
How does the number of loops of wire affect the strength of an electromagnet?
How does the speed at which an iron bar is removed from wire loops affect the strength of an electromagnet?
How does the thickness of the wire affect the strength of an electromagnet?