“电功率”一章的习题综合性较强,具体体现在:1.电学部分的很多重要知识点在这里充分地进行了综合. 2.许多问题的讨论都需要借助难度较大的数学手段. 3.题目中电路通常都不是简单的串联电路或简单的并联电路. 誅例1 如图1所示,电源电压不变,灯的电阻不随温度而 The exercises in the “Electric Power” chapter have a comprehensive comprehensiveness, which is embodied in: 1. Many important knowledge points in the electrical part are fully integrated here. 2. The discussion of many issues requires the use of difficult mathematical methods. The title of the circuit is usually not a simple series circuit or a simple parallel circuit. Example 1 As shown in Figure 1, the power supply voltage is constant, the lamp resistance does not change with temperature