Question

This problem explores the difference between solving a circuit using the KCL/KVL method and the node method. The circuit shown below has five elements: three resistors, a current source and a voltage source. The resistance of the resistors and the strengths of the sources are all given below the image. The five branch currents (i1 to i5) and the five branch voltages (v1 to v5) are also defined in the circuit using the associated variables convention. Recall that solving a circuit means solving for these branch variables (currents and voltages).

Answer 1

KCL is used in nodal analysis
KVL is used in loop/mesh analysis
The choice of which to use is dependent of "Tree" decided on to make the number of calculations minimum
Generally current sources would become cords, loop currents, in mesh analysis and voltage sources between nodes would be used in nodal analysis to eliminate one node.