认识“通”与“断” 故障分析不再难

• 作 者: 徐兴旺
• 出 处: 新高考(升学考试)
• 发表日期: 2014年04期
• 关键词: 电路故障 初中物理 故障分析 检查电路 示数 烧断 检修方法 串联电路 接触点 刻度线

电路故障分析是中考中电学主流的题型之一,它是初中物理电学教学中的一个重点内容,也是一个难点。学生遇到这样的问题时,往往无从下手。有的学生是抱着“猜”的思想进行解答的,结果往往是错误率很高,效果不佳。本文从“通”与“断”的理解出发,再利用常见的故障类型例题进行巩固与说明,化解电路故障中的几个难点,供大家参考,希望给广大师生提供一些帮助。

Circuit fault analysis is one of the main types of questions in the middle school entrance examination, which is a key content in the physics teaching of junior high school, but also a difficult point. When students encounter such problems, they often can not start. Some students are holding the “guess” thinking to answer, the result is often a high error rate, the effect is not good. This article starts from the understanding of “pass ” and “break ”, and then uses common examples of fault types to consolidate and explain, to resolve several difficulties in the circuit fault for your reference, I hope to provide some help to teachers and students .