Hi Guys, I'm a first year Electrical Engineering student and we're just covering the basics of circuit analysis. Currently we are going over Nodal analysis. I'm having some trouble correctly identifying the currents that are entering and leaving a node in a circuit. I can get most simple questions correct but when multiple sources are introduced and the complexity increases, especially when postive and negative signs are not allocated for each resistance, my answers are usually wrong because of an incorrect equation based on an errornous identification of current entering or leaving a node. I'm wondering is there a general rule of thumb (or logical procedure to follow) for labeling the correct flow of current in/out of a node? I've got exams coming up soon and want to be confident when writing out my equations. Any help would be appreciated :) Thanks.