Widely used for physics laboratories, electrical course teaching demonstrations, and circuit project development and testing environments. Constructed from ABS and metal, this 2A 20Ω Sliding Resistor features a sliding design with clearly marked calibration for easy and reliable use during experiments. Ideal for students, physics teachers, science enthusiasts, electricians and electronics enthusiasts who seek a handson learning tool. Precisely controls electrical resistance with our Adjustable Sliding Rheostat, an essential tool for understanding current variation in circuit experiments. Use scenarios In classroom demonstrations to illustrate Ohm's law by varying resistance and observing changes in current and voltage. In lab prototyping and circuit testing to tune loads and evaluate component behavior on a test bench. For hobbyist projects and educational setups to practice adjusting circuits and learning basic electronics concepts.