判断和排除电路故障问题,是初中电学实验的基础也是近年来物理中考的常见题型.解这类问题通常要分析判断整个电路的连接方式,然后根据故障现象采取“排除法”、“分析法”进行判断。一般的电路常见故障类型为开路和短路. Judging and resolving circuit faults is the basis of junior high school electrical experiments and is also a common question in physical examinations in recent years. To solve such problems, it is usually necessary to analyze and determine the connection of the entire circuit, and then take “exclusion method” and “analysis method” according to the phenomenon of failure. "Judge. The common circuit common fault types are open circuit and short circuit.