What is the term used for a wire that has an unwanted low resistance path between conductors or to ground?

The correct term for a wire that has an unwanted low resistance path between conductors or to ground is "shorted." In electrical circuits, when a short circuit occurs, it creates a pathway that has significantly lower resistance than the intended circuit. This can lead to excessive current flow, which can cause overheating, electrical fires, or damage to components.

An open circuit, in contrast, is a break in the continuity of the circuit that prevents current flow. A split is not a standard term used to describe a fault condition in wiring. Therefore, "shorted" is the most accurate term to describe the scenario presented in the question.