# 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 .

Calculate voltage drop V2 across R2 .

Expert's answer

Solution:

Given:

R1=200 Ohm

R2=800 Ohm

Vs=20V

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

Given:

R1=200 Ohm

R2=800 Ohm

Vs=20V

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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