两个电阻分别接在电路中,已知U1:U2=3:2,R1:R2=1:2,则I1:I2=_.

问题描述:

两个电阻分别接在电路中,已知U1:U2=3:2,R1:R2=1:2,则I1:I2=______.

两电流之比为:

I1
I2
=
U1
R1
U2
R2
=
U1R2
U2R1
=
3
2
×
2
1
=
3
1

故答案为:3:1.