An electrical network is an interconnection of electrical elements.
What we are trying to do in this course is to:
(e.g. what is the voltage at some point in a PCB)
(e.g. electric schematic)
Although, we will focus just on the analysis of the electrical circuits (or electrical networks) in this course, the same analysis techniques can be applied to many areas and they are fundamental for many engineering problems, so please don't assume you will not use them even if you don't deal with electric circuits.
Some applications:
A Thruster Converted into a thermal network:
Motion of a magnetic levitation train
Converted into a mechanical model: