论文部分内容阅读
故障一:闭合开关后,电压表、电流表指针向左偏转例1:在测量额定电压为2.5 V的小灯泡工作时的电阻实验中:(1)连接电路时开关应____。(2)晓明同学连接完电路后,闭合开关,发现电压表指针向右偏转,而电流表指针向零刻度的左边偏转,造成这一现象的原因是____。分析:闭合开关后,电压表、电流表的指针应该向右偏转,现在表的指针向左偏转,原因是“+”“-”接线柱接反了。解决方案是:把电池的正负极调过来,或把两
Fault 1: After the switch is closed, the voltmeter and ammeter pointer are deflected to the left. Example 1: Resistance when working on a small bulb with rated voltage of 2.5 V: (1) The switch should be ____ when connecting the circuit. (2) Xiao Ming students connect the circuit, the switch is closed and found that the voltmeter pointer to the right deflection, and ammeter pointer to the left of the zero deflection, the reason for this phenomenon is ____. Analysis: After closing the switch, the voltmeter, ammeter pointer should be deflected to the right, and now the pointer of the watch is deflected to the left because the “+ ” “- ” terminal is reversed. The solution is: the battery positive and negative transferred over, or two