In the picture below, there are two iron cores. They have exactly the same number of turns on each, and both are exactly the same except for where they are cut (and # of turns on the cut-out piece vs on the main piece). Air gap is the same on both.
If I were to pass the exact same current through both coils, and I tried to remove the cut-out piece from each, would one require more force than the other?
If I were to pass the exact same current through both coils, and I tried to remove the cut-out piece from each, would one require more force than the other?