Question

need help with sign convention for kirchoff's second law

Answer 1

@k_lynn

Answer 2

@e.mccormick , @jim_thompson5910 , or @timo86m maybe you guys would know this one?

Answer 3

@Michele_Laino

Answer 4

here is my explanation, based on an example:

1) for battery the correct sign goes from negative pole to positive pole, namely:

so the corresponding equation, is:
\[\Large {R_1}{I_1} + {R_3}{I_3} - {R_2}{I_2} = {V_1} - {V_2}\]
Please, note that positive sense is fixed a priori