What aspect of resistivity plays a key role in electrical safety?

High resistivity is crucial for electrical safety because it signifies that a material does not readily allow the flow of electrical current. When dealing with electrical systems, materials with high resistivity, such as rubber or dry wood, act as excellent insulators. This characteristic helps prevent electrical shock or faults by stopping current from easily flowing through unintended pathways, like a human body.

In practical applications, the selection of insulating materials is guided by their high resistivity to ensure users are protected from accidental contact with live wires or conductive surfaces. High resistivity materials are imperative in safety equipment, wiring insulation, and protective gear, which are all designed to minimize the risk of electric shock and enhance overall safety in electrical practices.