The mesh analysis used to solve the circuit which has a supermesh. After solving the circuit, power of sources determined.
A 6-node circuit is solved with the nodal analysis. It contains one dependent voltage source, two independent voltage sources, two independent current sources and some resistors. The dependent causes two nodes to form a supernode.
A simple DC resistive circuit with three resistors and two current sources are solved by the Nodal Analysis and power of one current source is determined.