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在普通高中课程标准实验教材物理选修3-1第一章第7节教学内容中,电容器是电气设备中的重要元件之一,平行板电容器的应用则在教材的很多地方涉及。关于平行板电容器电容大小,历来的中学教材都是根据实验得到的。但据中学教学特别是边远山区的中学物理教学实际,平行板电容器电容决定式实验是不可能做也不易做成功的。要完成教学任务,必须另辟蹊径。笔者进行本节教学时,根据教材内容从能量的转换角度,按照下述步骤引导学生思维,较容易地解决了这个问题。首先,笔者让学生明白,电容即电容器通过“留驻”电荷以储
In the ordinary high school curriculum standard experimental materials physics elective 3-1 Chapter I Section 7 teaching content, the capacitor is one of the important components in electrical equipment, the application of parallel plate capacitors are involved in many parts of the textbook. About the size of parallel plate capacitor, secondary school textbooks have always been based on experiments. However, according to middle school teaching, especially in middle schools in remote mountainous areas, it is impossible to make parallel plate capacitor experiments. To complete the teaching task, we must find another way. The author of this section teaching, according to the content of teaching materials from the perspective of energy conversion, in accordance with the following steps to guide students thinking easier to solve this problem. First of all, let the students understand that the capacitor through the capacitor “stay” charge to storage