Which term best describes heat generated by electrical current that creates an arc?

The term that best describes the heat generated by electrical current that creates an arc is heat from arcing. When electrical current passes through a medium and encounters resistance, particularly at points of contact or breaks in the circuit, it can produce an arc. This arcing phenomenon occurs when the current jumps across a gap, which generates intense heat. The heat from arcing is characterized by its rapid onset and high temperatures, capable of igniting materials nearby or causing other fires.

Understanding arcing is crucial in fire behavior contexts, as it illustrates how electrical energy can transform into thermal energy, leading to potential fire hazards. The other terms mentioned do not accurately capture this specific type of heat generation associated with electrical arcing.