In the world of electromagnetism, Lenz's law is renowned for its profound philosophy of "resistance." This law states that the direction of an induced current always attempts to oppose the change in the magnetic flux that caused it. When we place a metal ring (such as an aluminum ring) above a rapidly changing magnetic field (such as the magnetic field generated by a coil carrying alternating current), the changing magnetic field induces vortex-like currents (eddy currents) inside the metal ring. According to Lenz's law, the magnetic field generated by these eddy currents will strive to resist the change in the external magnetic field. If the external magnetic field attempts to strengthen and pass through the metal ring, the induced magnetic field will repel it; if the external magnetic field weakens, the induced magnetic field will attract it, attempting to maintain its original state. It is this magnetic force generated by "resistance" that overcomes gravity, propelling the metal rin
