To deal with electrical circuits it is necessary to define: Ohm's Law, where the electric force is the product of the resistance and the
E = R*i
and Kirchhoff's Laws in which we have the Law of Nodes, where the sum of the currents entering any node is equal to the sum of the currents that come out of it, and the Law of Meshes, where the sum of the voltage drops along any circuit is equal to the total voltage around the circuit (supplied by the batteries). Numerically, we can analyze the case below where we want to determine the electric circuit currents (i1,i2, and i3). Analyzing the circuit electrical system above, build a linear system with three equations and the three variables (i1,i2, and i3). Write in matrix form and solve using the scilab software.
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