I am working on a project which is in relation to electromagnets, however I have a very mediocre understanding of electromagnetism. Below is a poorly constructed sketch of my design: Please Register or Log in to view the hidden image! I would like to know if anyone could explain, or diagram how the magnetic field of this design would function. As a side note: Is there a way to control the field, as to make it dynamic throughout the different parts of the core? This of course would take more than is shown in the sketch.