Paper One - Electrical Theory PAPER 1 Electrical Theory UNIT 4 Electrical Materials and Components Section 2: Electrical Materials and Components 4. Conductors, Insulators, and Insulating MaterialsConductors, Insulators, and Insulating Materials Principle/Working MechanismDefinitions:TermDefinitionSymbolUnitConductorMaterial allowing free electron flow (low resistance)σ (Conductivity)Siemens/m (S/m)InsulatorMaterial resisting electron flow (high resistance)ρ (Resistivity)Ohm-meter (Ω·m) Text-Based Diagram:CopyDownloadConductor (e⁻ flow freely) → [Copper Wire] Insulator...
