What does the term 'K' represent for conductors?

The term 'K' in the context of conductors refers to conductivity. Conductivity is a measure of a material's ability to conduct electric current. It quantifies how easily electrons can flow through a substance and is typically represented in units of siemens per meter (S/m).

High conductivity indicates that a material can easily allow the passage of electricity, making it a critical factor when selecting materials for electrical wiring and fire alarm systems. Understanding the conductivity of various conductors is essential for ensuring efficient and safe installation in fire alarm systems, where reliable electrical performance is crucial for device functionality.