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Circuit Analysis 4:
Application of KVL and KCL and
3 Simultaneous Linear Equations

by Apolinario "Sam" Ortega, founder IN-V-BAT-AI


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Circuit Analysis 4
Circuit Analysis Using KCL and KVL and 3 Simultaneous Linear Equations

Using the calculator shown below, teachers and students can simulate different scenarios by changing the value of R1, R3, R2, V1 and V2.



I1 + I2 + I3 = Eq. 1

I1 + I2 + I3 = Eq. 2

I1 + I2 + I3 = Eq. 3





I1 negative current only means the actual current flow is opposite to the assumed current flow. Do simulation by changing the value of R1, R2, R3, V1 and V2. Then watch the predicted current. Using the current output reading is one way to troubleshoot if there is a component problem.

Answer, I1 = -0.265 Answer, I2 = 0.618
Answer, I3 = 0.353




R1 = 10 R3 = 50 R2 = 50

V1 = 15 V2 = 30

Change any values for what if scenarios and the equations will be updated reflecting new values.

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