“图线分析法”是从中学生的实际出发,设计的一种定性分析法。现以两个实验的解析为例介绍如下。 [例1]图1是电源ε、γ的测试电路 (1)电源的一般和标准U～I图线方程设I、U为电流表和电压表的测量值,根据闭合电路的欧姆定律 “Graphic analysis method” is a qualitative analysis designed from the reality of middle school students. The analysis of two experiments is now described as an example. [Example 1] Figure 1 shows the test circuit for the power supplies ε and γ. (1) General power supply and standard U-I curve equations I and U are measured values ​​of ammeter and voltmeter, and Ohm’s law is based on the closed circuit.