PFUSRC-096 The Topological Nature of Electricity—From Flow-Variable Channels to the Structural Conditions for Charge Separation

What is electricity? What is electric charge? What is the difference between direct current and alternating current? Why does a slight squeeze on piezoelectric ceramic generate electricity, while bending ice produces almost none? Mainstream physics provides only quantitative mathematical descriptions of electrical phenomena, but does not answer the fundamental question of why these phenomena occur. Based on the complete PFUSRC theoretical system, this paper provides systematic answers to these fundamental questions using the four-dimensional flow variable as the core unifying concept. The paper follows a three-tier logical structure: Ontological Layer → Mechanism Layer → Phenomenological Layer. It first defines the three foundational concepts—flow variables, 3D latching structures, and topological channels. It then derives the complete mechanism of electricity through topological latching and stress-gradient principles. Finally, it explains the differences in electrical response across various materials based on their crystal topological structures. All terms are defined hierarchically, with no crosslevel logical jumps, balancing theoretical rigor with intuitive accessibility. This paper fills the gap in the PFUSRC system regarding the ontological interpretation of electromagnetic phenomena, providing a unified electrical foundation for preceding papers on superconductivity and optical topological latching.