问题
填空题
有两个电阻,已知R1=3R2,把它们串联在电路中,I1:I2=______,U1:U2=______;把它们并联在电路中,I1:I2=______,U1:U2=______.
答案
串联电路中,I1:I2=1:1,U1:U2=R1:R2=3R2:R1=3:1;
并联电路中,I1:I2=R2:R1=R2:3R2=1:3,U1:U2=1:1;
故答案为:1:1,3:1,1:3,1:1.
有两个电阻,已知R1=3R2,把它们串联在电路中,I1:I2=______,U1:U2=______;把它们并联在电路中,I1:I2=______,U1:U2=______.
串联电路中,I1:I2=1:1,U1:U2=R1:R2=3R2:R1=3:1;
并联电路中,I1:I2=R2:R1=R2:3R2=1:3,U1:U2=1:1;
故答案为:1:1,3:1,1:3,1:1.