Two resistors in series circuit, the R1 known potential U1=12 v, R2 potential U2=6 v, ask U12 equal-CodePudding

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Two resistors in series circuit, the R1 known potential U1=12 v, R2 potential U2=6 v, ask U12 equal

Time：09-21

great god give advice or comments, thank you thank you thank you!

CodePudding user response:

Isn't also U1, U2?

CodePudding user response:

12 + 6=18 v