物理学是一门以实验为基础的学科．物理实验在物理教学中有着举足轻重的地位，它不仅能够激发学生学习物理的兴趣，巩固所学的物理概念和物理定律，更是培养学生动手能力和运用所学知识分析、解决实际问题的综合思维能力的重要手段．伏安法测电阻是初中阶段一个基本且非常重要 Physics is an experiment-based discipline. Physics experiment plays a decisive role in physics teaching. It can not only stimulate students’ interest in learning physics, consolidate the physical concepts and physical laws they have learned, but also train students’ hands-on abilities and apply the knowledge they have learned to analyze and solve practical problems. The important means of capacity. Voltammetry is a basic and very important measure of resistance in junior high school