【摘 要】
：
在人教版高中物理第二册“测定电源电动势和内阻”的实验中,其所依据的原理是闭合电路欧姆定律,即 E=U+Ir,其中 U 为路端电压,I 为电路中的干路电流。我们只要测出多组 U,I
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在人教版高中物理第二册“测定电源电动势和内阻”的实验中,其所依据的原理是闭合电路欧姆定律,即 E=U+Ir,其中 U 为路端电压,I 为电路中的干路电流。我们只要测出多组 U,I 值,通过画 U-I 图象就可求出电源的电动势和内电阻。于是,我们可以设计两个电路,见图1-a 和图
In the experiment of Physics Education Book 2 “Testing the electromotive force and internal resistance” of the PEP High School Physics, the principle behind it is closed circuit Ohm’s law, ie E=U+Ir, where U is the terminal voltage and I is The circuit current in the circuit. We only need to measure multiple sets of U and I values, and draw the U-I image to determine the electromotive force and internal resistance of the power supply. So we can design two circuits, see Figure 1-a and Figure
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