Well... I need some information on:If we use Iron nails, and we wrap copper wire around them, and use batteries to create magnetism.I know that the copper wire will probably create more of an electric charge, and add on to the magnetism. this is what I need answered, however. Why does this cause the magnetism to enhance? And is it used in some basis of creating energy?
The fact that the copper wire is coiled is crucial. By running a electric current through the wire, you are creating an induced magnetic field through the iron nail. This is the principle of inductance. Remember, when you create an electric field, you are also creating a perpendicular magnetic field. The coils are creating a nearly circular (planar) path for electron flow, so the magnetic field is oriented along the axis of the nail (right-hand rule). If the iron nail already has a magnetic field present, then you have an addition/superposition of magnetic fields. Otherwise, the source of the magnetism is solely inductance. Applications of induction principles include motor and generator design.
