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zi gan xian xiang yan shi shi yan de gai jin
Pages: 18-18
Year: Issue:  5
Journal: Experiment and Equipment for Primary School

Abstract:  中学物理教材中有关自感现象的演示实验,发光物体一般用小灯泡,笔者在教学中觉得有以下几方面不足:(1)当自感电动势产生的瞬时电压较高时会烧坏小灯泡,不易控制;(2)自感电动势的方向难以判断.本人在教学中对演示装置进行了改进,效果比较好,供读者参考.
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