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物理教学上用电地方很多,不论讲力学、热学、光学等,都得用电.因为它是热源、光源、动力来源的总枢纽,没有它有些课堂演示,很感困难,甚至于根本不能进行,特别在电学方面,处处离不开电,大部分同学来自农村,对电的直接感受还不很多,他们在生活和生产上,与电的接触很少,所以每年讲授这一部分知识,学生觉得抽象难懂,教师演示少,学生实验更少,虽然也曾买干电池使用,但对高压电源及交流电问题还不能
There are many places where electricity is used in physics teaching. Regardless of mechanics, thermals, optics, etc., we have to use electricity. Because it is the general hub of heat sources, light sources, and power sources, it is difficult to perform without some classroom demonstrations. It even cannot be performed at all. In terms of electricity, electricity is indispensable, and most of the students are from rural areas. There are not many direct feelings about electricity. They have little contact with electricity in life and production. Therefore, they teach this part of the knowledge every year. Students feel that Abstract is difficult to understand. There are few teacher demonstrations. There are fewer student experiments. Although they used to buy dry batteries, they cannot use high-voltage power supplies and AC power.