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2008年是江苏实行新高考的第一年,其中江苏高考物理卷以崭新的姿态出现在世人面前,除了稳中求新的特点外,还有一个重要特点就是区分度非常大,难题较难,简单题很简单.笔者在分析2008年江苏物理高考卷时发现了2008年和2007年高考江苏物理卷的一个共同特点:在电磁感应的难题上渗透微元的重要思想,为了更好运用这一思想解决物理问题,笔者就高考题进行分析,希望能够抛砖引玉.一、电磁感应电动势中微元法的模型介绍高等数学有一种处理问题的思想:将研究对象(研究过程)分割成许多微小单元,从而将
In 2008, it was the first year of Jiangsu’s implementation of the new college entrance examination. The physical volume of Jiangsu’s college entrance examinations appeared before the world with a brand-new attitude. Apart from the characteristics of stability and innovation, there is also an important feature that the degree of differentiation is very large and the difficulties are difficult. The simple question is very simple. The author found a common feature of the 2008 physical examination of the college entrance examination in Jiangsu in the analysis of the 2008 physical examination paper: the important idea of infiltrating the microelement in the electromagnetic induction problem, in order to better use this In order to solve the physical problem, the author analyzes the college entrance examination question and hopes to initiate it. First, the introduction of the model of electromagnetic induction electromotive force in the microelement method. Higher mathematics has the idea of dealing with problems: the research object (the research process) is divided into many tiny units. Which will