STELLA models for circuits require a little finesse. As seen in the capacitance model, current is the rate of change of charge. For consistency with the earlier models, charge remains a stock here. THE MODEL Vensim Version Vensim PLE Software Right-click to download the model Ohm's Law Vensim STELLA Version isee Player Software Right-click to download the model Ohm's Law STELLA PC Ohm's Law STELLA Mac [Diagram Level | Equations Level | Graphs ] Transferred_Charge(t) = Transferred_Charge(t - dt) + (Current) * dt INIT Transferred_Charge = 0 Current = Voltage/Resistance Transferred_Energy(t) = Transferred_Energy(t - dt) + (Power) * dt INIT Transferred_Energy = 0 Power = (Voltage^2)/Resistance Resistance = 10 Voltage = 12 Time Specs Range: 0-12, dT = 0.25, Integration Method = Runge-Kutta 2

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