I1 =300/900mA
I2 =150/600mA
取小的I2 =0.25mA
RT =1500KΩ
1500K*0.25m=375V
7.當300V,900kΩ和150V,600kΩ之伏特計串聯後,最高可量得多少伏..-阿摩線上測驗