在普通高中物理中测量干电池的电源电动势及其内阻的原理为闭合电路的欧姆定律,其测量的常用方法有多种,本文将对常见的几种测量方法展开讨论。一、电流表内接法(如图1)(1)采用量程为3V的学生用电压表,量程为6mA的学生用电流表。数据记录见表1:测得E_测=1.33V,r_测=0.56Ω。由于A表 In ordinary high school physics measurement of dry-battery power electromotive force and its resistance principle for the closed circuit Ohm’s law, the measurement of a variety of commonly used methods, this article will discuss several common measurement methods. First, the ammeter in the connection (Figure 1) (1) The use of 3V voltage range for students with a range of 6mA ammeter for students. Data records in Table 1: Measured E_test = 1.33V, r_test = 0.56Ω. Due to the A table