Lenz’s Law Loops Demonstration: a strand of aluminum, curled into a loop at each end, is balanced on a rotation point. A strong neodymium magnet at the end of a rod can interact and manipulate the balanced structure without touching it. Note that the closed loop allows a current to form and flow completely around the loop, whereas the loop with a gap barely interacts. A changing magnetic field (from the point of view of the moving loop) induces an electric current in the loop, which in turn prod