论文部分内容阅读
1.小明测量额定电压为3.8V小灯泡的额定功率,使用6V的电源。连接电路前,他发现电压表的0V～15V档已损坏,0V～3V档完好。他
1. Xiao Ming measures the rated power of a small bulb with a rated voltage of 3.8 V and uses a 6 V power supply. Before connecting the circuit, he found that the 0V to 15V files of the voltmeter were damaged, and the 0V to 3V files were intact. he