电路分析是电学教学的难点和关键,对电路等效简化是处理复杂电路问题的有效方法,常采用的简化电路方法有电流法、断路法、去表示、伸缩法等.笔者在物理竞赛辅导中,觉得对参加竞赛的学生适当渗透些较高层次的电路分析方法,不但使他们在竞赛中有高屋建瓴之势, Circuit analysis is the difficulty and key of electricity teaching. Equivalent circuit simplification is an effective method to deal with complex circuit problems. The commonly used simplified circuit methods include current method, open circuit method, de-representation, and telescopic method. The author is in the physics contest counseling. , I feel that the students participating in the competition should infiltrate some of the higher-level circuit analysis methods properly, which not only allows them to have a high profile in the competition.