Teaching materials and learning utility: The adjustable sliding rheostat serves as an effective learning tool for students and can be used as both a teaching instrument in class and a practical device in the laboratory. Durable construction and longevity: The slider rheostat is built with alloy and copper, featuring precise workmanship designed for longterm use and reliable performance. Easy to operate: The device has a simple structure and smooth sliding action, making it easy to use with no complicated setup. It is well suited for physics and electricity teaching. Dual mode resistance: It supports dual use as both a fixed value resistor and a variable value resistor, accommodating a range of circuit analysis needs. Use scenarios: Classroom demonstrations: Use the sliding rheostat to illustrate Ohm's law and the relationship between voltage, current, and resistance by adjusting the resistance in a live circuit. Laboratory experiments: Employ it in RC circuit experiments, biasing networks, or other experiments that require adjustable or fixed resistance to tune circuit behavior. Student projects and analysis: Apply the rheostat for building voltage dividers, experimenting with resistor values in amplifiers, or practicing circuit analysis with adjustable resistance settings.