电流表是电学实验中重要的仪表之一,其使用规则和正确读取示数的方法是我们学习的一个重点,正确使用电流表应做到“五会”:1.会调零实验前,先要注意观察电流表的指针是否对准零刻度线,若不是对准零刻度线,则需要用螺丝刀旋转表盘正面中央的调零螺丝,使指针对准零刻度线. The ammeter is one of the important instruments in the electrical experiment. Its use rules and the method of reading the numbers correctly is a key point of our study. The correct use of the ammeter should be “five sessions”: 1. Before zeroing the experiment, it is necessary to Observe that the pointer of the ammeter is aligned with the zero scale line. If it is not aligned with the zero scale line, you need to use a screwdriver to rotate the zero adjustment screw on the front center of the dial to align the pointer with the zero scale line.