利用变限积分函数求导法讨论感应电动势问题

利用变限积分函数求导的方法,在磁场是无源场的基础上,推导了感应电动势是由感生电动势和动生电动势代数叠加的结果.与已有文献用其它方法推导出的结果一致.这进一步说明了感应电动势的两种产生途径,以及两种机制相互不影响的结论.将结论用于单边匀速运动的矩形线圈(大学物理教材中通用的简单模型),并运用于具体的授课过程,体现了内容的系统性,避开了繁琐的数学推导,拓展了学生的视野,不失为讲授该内容的较好方式.

Discussion on Electromotive Force of Induction Using Uncertain Limit Integral Function Derivative Method

Using uncertain limit integral function derivative method and property of source free magnetic field,the calculation of induction electromotive force was deduced.The result shows that the motional electromotive force and induced electromotive force could be calculate independently.The two approaches that give birth to induced electromotive force are no mutual impact.This is consistent with the results have been published.Furthermore,it was applied to a special model that is widely used in the text book.It is beneficial for teaching the electromotive force of induction.