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在近几年的高考中,直流电路问题主要是直流电路的分析与计算.就其考查内容归纳起来,一般有:(1)等效电路的分析;(2)电路中局部发生变化而引起的动态分析;(3)电路故障分析;(4)含有非理想电表的电路问题;(5)含有电容器的电路问题;(6)电路的电功率问题;(7)电路中的极值问题等.试题又常以“活题”形式出现,而且注重考查学生多方面的能力.本文着重谈谈如何解决直流电路问题.
In the college entrance examination in recent years, the problem of DC circuits is mainly the analysis and calculation of DC circuits. Summarizing the contents of the examination, there are generally: (1) analysis of equivalent circuits; (2) changes caused by local changes in the circuit Dynamic analysis; (3) circuit fault analysis; (4) circuit problems with non-ideal electricity meters; (5) circuit problems with capacitors; (6) electric power problems in circuits; (7) extreme value problems in circuits. They often appear in the form of “live questions” and focus on examining students’ abilities in various aspects. This article focuses on how to solve DC circuit problems.