短路是电学的重点、难点和热点知识,教材中有多处直接或间接地讲述了短路的知识,如“直接把导线连接到电源上,电路中会有很大的电流”;“把电流表直接连在电源的两极上会烧坏电流表”;在家用电路的教学内容中,阐述了短路的知识,配合实验演示和分析讲解,对短路的概念、原理和危害作了较为详尽的论述,使学生对短路知识的全貌有了较为深入的理 Short-circuiting is the focus, difficulty, and hot-spot knowledge of electricity. There are many places in the textbook that directly or indirectly describe the knowledge of short-circuiting, such as “directly connecting the wire to the power supply, the circuit will have a large current ”;“; Connecting the ammeter directly to the two poles of the power supply will burn out the ammeter.” In the teaching content of the home circuit, the knowledge of the short circuit is explained. Together with the experimental demonstration and analysis, the concepts, principles and hazards of the short circuit are described in detail. The discussion has given students a more in-depth understanding of the entire short-circuit knowledge.