What copper wire is the best to use for ElectroMagnets?
You need insulated wire to avoid the turns shorting each other. varnished wire, “magnet wire” is best. Iron core is much better than air core. Thick wire allows more current to flow while minimizing losses. But thicker wire doesn’t allow as many turns, and the more turns the more magnetic field. But the more current also increases the magnetic field. So it’s a compromise between thick and thin. The size depends on a lot of factor like number of turns and battery voltage and desired field. wikipedia: A magnetic core is a piece of magnetic material with a high permeability used to confine and guide magnetic fields in electrical and electromechanical devices such as electromagnets, transformers, electric motors, and inductors. It is made of ferromagnetic metal such as iron, or ferrimagnetic compounds such as ferrites. The high permeability, relative to the surrounding air, causes the magnetic field lines to be concentrated in the core material. The magnetic field is often created by a coi
