在全日制十年制高中物理试用本下册里,安排了一个测量电流表内阻的学生实验,在实验方法说明中指出,实验用电源应采用蓄电池,因为它本身内阻很小,可以忽略不计。在新编高中物理课本中,同一实验已不再强调电源的种类了。可是我们有些同志却凭直觉 In the full-time, ten-year high school physics trial, a student experiment was conducted to measure the internal resistance of the ammeter. In the explanation of the experimental method, it was pointed out that the experimental power supply should use a battery because it has a small internal resistance and can be ignored. . In the new high school physics textbook, the same experiment no longer emphasizes the type of power supply. However, some of our comrades are intuition