Regardless of whether one is siphoning off the “desire that moves them” in an electric flow for heat, light, or power (all of which are subsumed, technically, by the term “work”), two things are important: first, that the electrons are moving through, not stopping in, the device; and second, that they are not overly diminished in their desire (or potential for work) in the process. The name for the drive, also called a potentiality, is voltage. The measure of this drive is a volt—or a unit of electrical tension.