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在现行高中物理教材“交流电”一章中,要讲到“交流电的有效值与最大值间的关系”以及“交流电的相差”等有关交流电特性的重要知识。如果在讲授时配合上演示实验,必定有助于学生理解和巩固。兹将所用的仪器和方法介绍于下,供参考。一、交流电的有效值与最大值间的关系按图1所示的电路接好。调节电压用的分压器中的变阻器R为J2354—1型滑动变阻器
In the current AC high school physics textbook, AC, we talk about the important knowledge about AC characteristics such as “the relationship between the effective value of AC power and the maximum value” and “the difference between AC power”. If you cooperate with the demonstration on teaching, it will certainly help students to understand and consolidate. The following instruments and methods will be introduced below, for reference. First, the exchange between the effective value and the maximum value of the circuit shown in Figure 1 connected. The voltage regulator for voltage regulation rheostat R is J2354-1 type sliding rheostat