Resistance wire is a type of wire specifically designed to resist the flow of electric current. This resistance generates heat, making it useful in various applications such as heating elements in toasters, electric stoves, and industrial furnaces. Common materials used for resistance wire include nichrome, copper, and constantan. The amount of resistance in the wire depends on its material, length, and cross-sectional area. When electricity passes through the wire, the resistance converts electrical energy into thermal energy, which can be harnessed for heating purposes. This property makes resistance wire essential in many electrical devices and systems.