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初中物理沪科版第二册第十三章有两类问题:根据电路画电路图;根据电路图连接电路。对于初学电学的同学们来说,由于缺乏电学基础知识,所以做起来难度较大。笔者根据多年教学实践,总结得出处理此类问题的方法策略。一、根据电路画出电路图具体要求:1.用统一规定的符号。2.导线应横平竖直。3.电路元件分布应匀称。4.拐角处不允许画元件。具体操作:对于无电流分支的串联电路,只要沿着一定顺序将元件逐个顺次画出即可。对于有电流分合的电路
There are two types of problems in the 13th chapter of the second edition of the junior high school physics science edition: draw the circuit diagram according to the circuit; Connect the circuit according to the circuit diagram. For beginner students, it is difficult to do it because of the lack of basic electrical knowledge. Based on years of teaching practice, the author summarizes the methods and strategies for handling such problems. First, draw the circuit diagram according to the specific requirements of the circuit: 1. Use the uniform symbol. 2. The wire should be horizontal and vertical. 3. The distribution of circuit components should be symmetrical. 4. It is not allowed to draw components at the corners. Specific operation: For series circuits without current branching, simply draw the components one by one in a certain order. For circuits with current sharing