5.7 Kirchhoff's laws a circuit has nodes, branches, meshes(see Fig 5-10) The current law: at any node the sum of the incoming currents is equal to the sum of the outgoing currents For instance, at the node A:I1=l6+17 The voltage law: around any mesh the voltage rise is zero For instance around ABDE- A, the voltage rise is V1+1B1-12R2+l5R25+166=0. Figure s-10 Part of a complex circuit