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在电磁感应现象中,导体切割磁感线或回路中磁通量发生变化,都将会产生感应电动势,此时的导体或回路就相当于电源。在一些电磁感应问题中,这样的电源常常有两个,同学们在求解此类问题时,有些同学常常感到无从下手,还有些同学常因考虑不周,顾此失彼,导致解题错误。为了提高同学们求解此类问题的能力,下面举例分析。一、两导体棒同时切割磁感线问题
In the phenomenon of electromagnetic induction, the conductor cutting magnetic induction lines or magnetic flux changes, will produce induced electromotive force, the conductor or circuit at this time is equivalent to the power supply. In some electromagnetic induction problems, there are often two such power supplies. When students solve such problems, some students often find it hard to get started. Others often fail to consider each other’s problems and lead to mistakes in solving problems. In order to improve the ability of students to solve such problems, the following an example analysis. First, the two conductors at the same time cut magnetic induction line problem