《物理通报》1995—4“对演示自感电路的讨论”一文,理论分析后给出“不能用甲图演示断电自感现象;用乙图不能演示电键接通时的自感现象。”用两个电路分别做通断电自感实验有人为割裂同一现象的嫌疑(人教社的参考书也这样介绍)。教学中发现,两个电路只做少许改进就都能独立方便地完 “Physics Bulletin,” 1995-4, “Discussions on Demonstration of Self-Inductance Circuits”, “After Theoretical Analysis,” "Can’t use a picture to demonstrate power failure self-inductance phenomenon; Phenomenon.” “The use of two circuits to make electrical self-sensing experiments, respectively, is a suspicion of splitting the same phenomenon. In the teaching, it was found that the two circuits can be easily and independently completed with only a little improvement.