"Resistive" refers to the property of a material that opposes the flow of electric current. This resistance is measured in ohms and is a key concept in electronics. Materials like copper and aluminum have low resistance, making them good conductors, while materials like rubber and glass have high resistance, classifying them as insulators. In practical applications, resistive elements are used in devices such as resistors, which help control current flow in circuits. The amount of resistance can affect how much energy is lost as heat, influencing the efficiency of electrical systems and devices.