在学习电磁感应现象时,常遇到求解感应电流通过导体截面的感应电量问题,解这一问题的基本思路是:根据法拉第电磁感应定律和闭合电路的欧姆定律求平均感应电流I,利用电流I乘以所用的时间△t即为通过导体截面的电量q,但是由于题目所提供的物理情景、电路结构、磁通量的变化、初始条件等情况多种多样,导致采用的方法不同,下面以实例谈解法. When learning the electromagnetic induction phenomenon, it often encounters the problem of solving the induced quantity of induced current through the conductor cross-section. The basic idea to solve this problem is: According to Faraday’s law of electromagnetic induction and Ohm’s law of the closed circuit, the average induced current I is used, and the current I is used. Multiplied by the time △ t is the amount q of the conductor through the cross-section of the conductor, but due to the variety of physical scenarios, circuit structures, magnetic flux changes, and initial conditions provided by the subject, resulting in different methods, the following examples solution.