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电磁感应综合问题是高中物理的主干知识,是每年高考的必考内容.考查内容涉及力学和电学,从最近几年的高考试题特点可以看出,试题设计新颖,综合度高,创新较大.下面以2014年全国新课标卷Ⅱ第25题为例分析其解题思路.解决的方法第一问可用平均速度法,电势差法,定义法.第二问可用定义法,平均速度法,能量守恒法,极限思维法,不管什么方法最终都可得出结论,从而培养学生多思路的分析问题,可提高学
The comprehensive problem of electromagnetic induction is the backbone knowledge of high school physics, which is the compulsory part of college entrance examination each year.Research involves mechanics and electricity, which can be seen from the characteristics of college entrance examination papers in recent years. The examination questions are novel in design, highly integrated and innovative. Below the 2014 New Curriculum Volume II Question 25 as an example to analyze the problem-solving ideas to solve the first question can be average velocity method, potential difference method, the definition of law. The second question can be defined by the average speed method, energy Conservation Law, the ultimate thinking method, no matter what method can be concluded in the end, so as to develop students thinking of multi-thinking can improve learning