Kirchhoff\'s Laws Lab calculation help... I previously posted this question and
ID: 1441813 • Letter: K
Question
Kirchhoff's Laws Lab calculation help... I previously posted this question and was given a system of equations as the answer. I have the system of equations from my professor and from the previous answerer (thank you!) but I am having trouble solving them. Every time I try to solve them I get answers that are 1=1 or 0=0 which obivously isn't the way to do it.
The values for R1, R2, R3, R4 are
R4= 1.011 M?
Our power supply was set to 8V which I believe is the value of V0 in the equations...
These are the equations given by the professor
eq 1. 8-I2 (66.9 (r2+r3)) -I0 (67.7)=0
eq 2. -I1 (1000)+I2(62)=0
eq 3. I0=I1+I2
R1= 67.7 k? R2=50.8 k? R3=16.10 k?R4= 1.011 M?
Our power supply was set to 8V which I believe is the value of V0 in the equations...
This is the photo that was part of the previous answer
Explanation / Answer
adding eq-1 and eq-2
Vo = i R1 + i1 R4
8 = i (67700) + i1 (1011000) eq-5
from eq-2
i2 (R2 + R3 ) = i1 (R4)
i2 (50800 + 16100) = i1 (1011000)
i2 = 15.11 i1 eq- 6
i = i1 + i2
i = i1 + 15.11 i1
i = 16.11 i1 eq-7
using eq-5 and eq-7
8 = (16.11 i1)(67700) + i1 (1011000)
i1 = 3.81 x 10-6
i = 16.11 i1 = 16.11 x 3.81 x 10-6 = 6.14 x 10-5
i2 = 15.11 i1 = 15.11 x 3.81 x 10-6 = 5.75 x 10-5
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