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物理
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电阻并联公式R=(R1×R2)÷(R1+R2),r2=?
人气:300 ℃ 时间:2019-10-19 11:25:23
解答
这个公式实际上是来自于:
1/R=1/R1+1/R2
所以:1/R2=1/R-1/R1
即:1/R2=(R1-R)/R1R
倒数:R2=RR1/(R1-R)
来自《中学物理导航》的解答.
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