依托实验现象深度认识自感问题  

Deeply understanding self perception issues based on experimental phenomena

作　　者：黄绍书 谭文 HUANG Shao-shu;TAN Wen(No.23 Middle School inLiupanshui City,Liupanshui,Guizhou 553000,China;Anshun College of Mathematics and Science,Anshun,Guizhou 563000,China)

机构地区：[1]六盘水市第23中学,贵州六盘水553000 [2]安顺学院数理学院,贵州安顺563000

出　　处：《大学物理》2025年第1期112-117,共6页College Physics

基　　金：2022年教育部高等学校大学物理课程教学指导委员会大中物理教育衔接工作委员会教学研究课题“三新背景下县域普通高中物理实验教学策略研究”(立项编号:WX202242)部分研究成果.

摘　　要：利用日光灯电感镇流器大自感系数特点和普通小自感线圈设计教学体验型实验,根据实验现象对自感问题进行比较深入的研究,给出实验电路在线性模型下的通电过程及断电过程的自感电动势和自感电流表达式.分析了线性理论结果与实验现象不完全吻合的原因,同时,纠正有关文献对自感电流和自感电动势的错误认识.Using the characteristics of high self inductance coefficient of fluorescent lamp inductor ballasts and ordinary small self inductance coils,a teaching experience experiment is designed.Based on the experimental phenomena,a more in-depth study is conducted on the self inductance problem,and expressions for the self induced electromotive force and self induced current of the experimental circuit during the electrification and power-off processes in a linear model are provided.We analyze the reasons for the incomplete agreement between the results of linear theory and experimental phenomena,and correcte the erroneous understanding of self induced current and self induced electromotive force in relevant literature.

关 键 词：大自感系数 电流变化 自感电动势 自感电流 

分 类 号：O4-1[理学—物理]