By Alexander Sadiku.pdf — Network Theory

He found a 100 $\mu$F capacitor in the parts bin. He soldered it into place, the smell of rosin core smoke filling the air. This was the final piece. He applied the concepts of one last time to verify the voltage at the output pin of the Op-Amp.

For months, he had seen Network Theory as a collection of dry equations—KVL, KCL, Mesh, Nodal. But tonight, in the quiet desperation of the lab, the book had revealed its true nature. It wasn't just math. It was a philosophy. Network Theory By Alexander Sadiku.pdf

The text you are looking for is titled Fundamentals of Electric Circuits He found a 100 $\mu$F capacitor in the parts bin