Which term describes an object or substance capable of conducting electricity?

The term that accurately describes an object or substance capable of conducting electricity is "conductor." Conductors are materials that allow the flow of electric charge, typically due to the presence of free electrons that can move easily through the material. Common examples of conductors include metals like copper and aluminum, which are widely used in electrical wiring and components.

In contrast, other terms like "insulator," "resistor," and "semiconductor" refer to different characteristics of materials regarding their interaction with electricity. Insulators are materials that resist the flow of electric current, ensuring that electricity does not pass through them easily. Resistors are designed to limit or resist the flow of current in a circuit, often utilized to control current levels. Semiconductors have conductivity properties that are somewhere between conductors and insulators, capable of conducting electricity under certain conditions, but they do not conduct as freely as conductors. Therefore, "conductor" is the most accurate term for an object that conducts electricity effectively.