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电阻R1和R2串联,已知R2=4R1,若R2两端电压U2=16V,则R1两端电压U1=()。


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更多 “电阻R1和R2串联,已知R2=4R1,若R2两端电压U2=16V,则R1两端电压U1=()。” 相关考题
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