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Answer on Electric Circuits Question for lizan

Question #50345
Two resistors, R1 = 200 Ω and R2 = 800 Ω are connected in series across a d.c. supply, Vs = 20 V

Calculate voltage drop V2 across R2 .
Expert's answer
R1=200 Ohm
R2=800 Ohm
Lets find currents I=I1=I2=Vs/(R1+R2)
But  I2=V2/R2 -> V2=I2*R2=Vs*R2/(R1+R2)
I2= 16V
Answer: voltage drop V2 across R2 is 16V

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