ΦΥΣΙΚΗ Γ' ΛΥΚΕΙΟΥ, 2ος Κανόνας Kirchhoff: Η Απόλυτη Μεθοδολογία για Πρόσημα & VAB

The video lesson is an educational guide to Kirchhoff's second law, which is fundamental for solving electrical circuits. The analysis is based on the principle of conservation of energy and explains that the algebraic sum of potential differences in a closed path equals zero. The sign conventions that must be followed when crossing sources and resistors within a loop are presented in detail. In addition, the specific methodology for applying the rule is described through practical examples in complex circuits. Finally, the method of calculating the potential difference between two specific points using the same principles is explained.