滑动变阻器是高中物理电学实验中的重要器材,在电学设计性实验中有着重要应用。学生能否正确地选择使用滑动变阻器,不仅能有效地考查学生对实验原理和方法的理解,而且能有效地考查学生对知识的迁移和综合应用能力。这一知识点是学生学习的一个难点,也是教学的一个重点。以下笔者谈谈滑动变阻器的两种接法和选择,以与同行探讨。 Slide rheostat is an important high school physical electrical experiment equipment, electrical design experiments have an important application. Students can choose the correct use of sliding rheostat, not only can effectively examine the students understanding of experimental principles and methods, and can effectively examine the students’ knowledge transfer and comprehensive application ability. This point of knowledge is a difficult point for students to learn, but also a focus of teaching. The following author talk about sliding rheostat connection and the two options to explore with their peers.