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填空题有两个电阻,R1=4Ω,R2=6Ω,如果把它们并联在电路中,通过它们的电
填空题有两个电阻,R1=4Ω,R2=6Ω,如果把它们并联在电路中,通过它们的电
发布时间:2020-07-28 18:07:03
填空题有两个电阻,R1=4Ω,R2=6Ω,如果把它们并联在电路中,通过它们的电流分别为I1、I2,它们两端的电压分别为U1、U2,则I1:I2=________,U1:U2=________.
网友回答
3:2 1:1解析分析:知道两电阻并联,利用欧姆定律和并联电路的电流关系、电压关系分析判断.
解答:∵R1、R2并联,
∴U1=U2=U,
∴U1:U2=1:1;
又∵I=,
∴I1:I2=:=R2:R1=6Ω:4Ω=3:2.
故
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