Resistive devices are electrical components that oppose the flow of electric current, converting electrical energy into heat. Common examples include resistors, which are used in various electronic circuits to control voltage and current levels. These devices follow Ohm's Law, which states that the current through a conductor between two points is directly proportional to the voltage across the two points. In addition to resistors, other resistive devices include heaters and thermistors. Heaters use resistance to generate heat for warming spaces or materials, while thermistors are temperature-sensitive resistors that change resistance with temperature variations. Both types play crucial roles in everyday electronic applications.