物理题做到此卡住请大家指教:I1乘R1=I2乘(R1+R2分之R1乘R2);I1:I2=1:5;电源电压不变,求:R1:R2
问题描述:
物理题做到此卡住请大家指教:I1乘R1=I2乘(R1+R2分之R1乘R2);I1:I2=1:5;电源电压不变,求:R1:R2
答
直接把右边i2除到左边去,左边R1除到右边得到,i1 / i2 = R2 / (R1+R2) = 1 / 5,分式化积5R2=R1+R2,所以4R2=R1,R1:R2=4:1