Engineering Circuit Analysis 8th Edition Solution Manual Chapter 3 [top] -

Pro tip from the manual: Never try to write a current through the voltage source itself. You cannot define the current in an ideal voltage source directly, which is why the supernode exists.

The solution manual for Chapter 3 of Engineering Circuit Analysis (8th Edition) by Hayt, Kemmerly, and Durbin focuses on Voltage and Current Laws Pro tip from the manual: Never try to