短路是初中电学的重点、难点和热点知识，教材中有４处直接或间接地讲述了短路的知识，在“电路”一节中，教材以“直接把导线接在电源上，电路中会有很大的电流”引出短路，并指出短路会损坏电源的危害；在“电流表”一节中，教材以“把电流表直接连在电源两极上会烧坏电流表 Short-circuit is the focus, difficulty, and hot spot knowledge of junior middle school electricity. There are 4 places in the textbook that directly or indirectly describe the knowledge of short circuit. In the section “Circuits”, the textbook “connects the conductor directly to the power supply, and the circuit will have “Large current” leads to a short circuit and indicates that a short circuit can damage the power supply. In the section called “Ampere”, the textbook “puts an ammeter directly on the two poles of the power supply and burns out the ammeter.