由于未按照实验操作要求连接电路,或者电路中某些元件出现故障,导致未出现应有的实验现象,而根据所出现的现象也能推断出电路故障所在或产生原因,是近几年考题中常见的一种类型.这类题目较新颖灵活,正确解答它既要有扎实的基础知识,又要有灵活的解题技巧和敏捷的逻辑推理能力,属要求较高的题目,是电学中的一个难点.下面就结合中考实例介 As the experimental operation is not required to connect the circuit, or circuit failure of some of the components, resulting in the phenomenon should not have the test, and according to the phenomenon can also infer the circuit fault where or cause of the problem is in recent years Common types of these topics more innovative and flexible, correct answer it requires both a solid foundation of knowledge, but also have a flexible problem-solving skills and agile logical reasoning ability, is a more demanding subject, is the electrical A difficult. The following combination of test cases referrals