滑动变阻器在实验室中作研究试验用，在校准电气仪表中作变更电压电流或作为代替未定阻值的可变电阻器用，在教学中供中学物理教师演示或学生分组实验使用。
J2354 Sliding Rheostat
Rheostat slide in the laboratory tests are used for research, in the calibration of electrical instruments for change in voltage and current, or as a substitute for determined resistance variable resistor Used in Teaching for secondary school physics teachers or students to demonstrate the use of the experimental group.