利用电流表和电压表测定电源电动势和内阻的实验在高中电学实验中占有很重要的地位,此实验的基本原理是闭合电路欧姆定律I=E/(R+r),不同版本的新教材都更注重要求学生加深对此实验原理本质的 The use of ammeter and voltmeter power supply emf and the resistance of the experiment in high school electrical experiments occupy a very important position, the basic principle of this experiment is the closed circuit Ohm’s law I = E / (R + r), different versions of the new textbook Pay more attention to require students to deepen the essence of this experimental principle