在电磁感应现象中,产生感应电动势的那部分导体相当于电源.从电源的角度分析电磁感应现象问题,常能化繁为简,化难为易. 一、当导体切割磁感线时,可应用电源的观点分析导体两端电势高低 In the electromagnetic induction phenomenon, the part of the conductor that generates the induced electromotive force is equivalent to the power supply. From the perspective of the power supply, the phenomenon of electromagnetic induction is often analyzed. It can be easily simplified, and it is difficult to change. First, when the conductor cuts the magnetic flux, it can be applied. The power point of view analyzes the potentials at both ends of the conductor