一、问题的提出: 金箔验电器是电学教学中首先使用的静电仪器,它结构简单,演示效果明显。对于验电器的作用,在初、高中物理教材中都未作明确介绍,而只是说:“摩擦过的物体带不带电可以用验电器检验。”一些高等院校电磁学教材也只是说验电器是“测量电量的最简单的仪器”,“带电体上的电量可用验 First, the problem is proposed: Gold foil electroscope is the first electrostatic instrument used in electricity teaching, it is simple structure, demonstration effect is obvious. For the role of electroscope, in the early and high school physics textbooks are not clearly described, but only said: “Friction objects with no electricity can be checked with electroscope.” Some colleges and universities electromagnetic teaching materials are only said electroscope Is “the simplest instrument for measuring electricity”, "the available electricity on the charged body is available