BC has a tendency to accelerate (increase kinetic energy) continuously. However, this process does not consume potential energy, nor does it generate induced potential.
My drawing is a top view. The two concentric circles are two wires that provide the "magnetic field". The arrows represent the direction of the current. A is the center of the concentric circles. BC is part of a circuit that is perpendicular to the plane of the drawing.
I think everyone would agree that linear current is simpler than circular current. So please tell me honestly, which one do you think is more fundamental? Considering that a loop is made up of closed lines, I think the answer is obvious.
What is painful is, in mainstream electromagnetism, the...