We have two ideal voltage sources in a resistive network. To find the unknown current and voltage, we use the superposition theorem:
The total current in any part of a linear circuit equals the algebraic sum of the currents produced by each source separately. To evaluate the separate currents to be combined, replace all other voltage sources by short circuits (and all other current sources by open circuits).
1. Begin by ...
The solution provides detailed step-by-step explanation for calculating voltage and current in a complex resistive circuit with two sources. The solution shows a good example of how to employ the principle of superposition.