Which electromagnet will produce the strongest magnetic force?

Question

Electromagnet Y.
Electromagnet X.
Electromagnet Z.
Electromagnet W.

Answer 1

It is not possible to determine which electromagnet will produce the strongest magnetic force without additional information such as the number of coils, the amount of current passing through the coils, and the material used in the core of each electromagnet. The strength of an electromagnet is affected by these factors, among others.