一、本月知识学习指要理解断路与短路的概念，会根据电路中电流或电压的变化情况确定电路发生断路或短路的位置；掌握含有电容器电路的特点，会分析含有电容器的直流电路问题；理解滑动变阻器在电路中的作用，掌握限流电路与分压电路的特点、连接方式，并能够正确地选择这两种 First, this month’s knowledge learning means to understand the concept of open circuit and short circuit, according to the current or voltage changes in the circuit to determine the location of circuit open or short circuit; grasp the characteristics of the circuit containing the capacitor, will analyze the DC circuit containing capacitors; Understand the role of the sliding rheostat in the circuit, grasp the characteristics of the current-limiting circuit and the voltage-dividing circuit, the connection method, and can correctly select the two