Basic DC Theory DC CIRCUIT ANALYSISSubstitute these equations for I1, I2, and I3 into Kirchhoff’s current equation (2-20) yields thefollowing.VNR2VAVNR1VBVNR3The circuit shown in Figure 45 can be solved for voltages and currents by using the node-voltageanalysis.First, assume direction of current flow shown. Mark nodes A, B, C, and N, and mark theFigure 45 Node - Voltage Analysispolarity across each resistor.Second, using Kirchhoff’s current law at Node N, solve for VN.I3I1I2VNR2VAVNR1VBVNR3VN660VN820VN4Rev. 0 Page 57 ES-02
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