动态电路是指局部电路发生变化,引起整个电路中电流、电压、电功率等电学参量发生变化.解决这类问题,需要学生在熟练掌握欧姆定律基础上,准确识别电路结构,灵活的应用串并联电路的规律,从局部到整体,再从整体到局部详尽分析,就能找到解题的思路.这类题考查了学生的综合、分析能力及识图能力,是在考查知识的基础上体现了能力立意.本文以常见的三类动态分析问题进行详解,以期找到解决这类问题的基本方法. Dynamic circuit refers to the local circuit changes, causing the entire circuit current, voltage, electrical power and other electrical parameters change.To solve these problems, students need to master the Ohm’s law, based on accurate recognition of the circuit structure, flexible application of series-parallel circuit Of the law, from the local to the whole, and then from the whole to a detailed analysis of local, you can find a solution to the problem.This type of test examines the students’ ability to synthesize, analyze and map, is based on the examination of knowledge reflects the ability Conception .This article is based on three common dynamic analysis problems, in order to find the basic method to solve such problems.