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1电动势教学的回顾与反思电动势一直是高中物理教学的重点和难点,在教学中长期存在争论,争论的主题是要不要引入非静电力,并逐渐形成了3种不同的教学安排.人教社“甲种本”导用的是典型的电压引入方式.在课程设置上省略了非静电力,通过对比不同的电源两端电压不同,从而引出电动势是表征电源特性的物理量,大小等于没有接入外电路
1Electric potential teaching review and reflection Electromotive force has always been the focus and difficulty of high school physics teaching. There is a long debate in the teaching, the debate is the subject of whether or not to introduce non-electrostatic force, and gradually formed three different teaching arrangements. “A kind of ”guide is a typical voltage introduction method. The non-electrostatic force is omitted in the curriculum setting, by comparing the different voltages at different power supply ends, which leads to the electromotive force is the physical quantity that characterizes the power supply, the size is equal to no Access to external circuits