“电表改装”是在串联电路、并联电路教学的基础上,应用串联、并联的特点和规律,将小量程电流表(又称电流计)改装成电压表和电流表.对此,有些教师将教学重点放在电流计的介绍、电表改装的计算和电表量程扩大倍数的计算上,以便来应付大量的练习.我们认为“电表改装”的知识教学 “Motor conversion” is based on the series circuit, parallel circuit teaching, the application of series and parallel characteristics and laws, the small-range current meter (also known as current meter) converted into voltmeter and ammeter. On this, some teachers will focus on teaching Put on the introduction of the galvanometer, the calculation of the conversion of the meter, and the calculation of the expansion of the electric meter range, so as to deal with a large number of exercises. We believe that the teaching of “meter modification”