The strength of an electromagnet depends on several factors including the number of turns in the wire coil, the current flowing through the coil, and the type of core material used. Generally, increasing the number of turns in the coil and increasing the current will result in a stronger magnetic field. Additionally, using a material with a high magnetic permeability for the core, such as iron or steel, can enhance the strength of the electromagnet. So, an electromagnet with a larger number of turns, higher current, and a core made of a high-permeability material will produce the strongest magnetic force.
