DC CIRCUIT ANALYSIS
Basic DC Theory
Figure 44 Circuit for Node Analysis
Assume that loop currents I1 and I2 leave Node N, and that I3 enters Node N (Figure 44).
From Kirchhoff’s current law:
(2-20)
I
0
I1
I2
I3
0
I3
I1
I2
Using Ohm’s Law and solving for the current through each resistor we obtain the following.
where VR is the voltage across resistor, R.
I
VR
R
I3
VN
R2
I1
VA
VN
R1
I2
VB
VN
R3
ES-02
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