1. The problem statement, all variables and given/known data There are several parts, but the part I'm stuck on is: what happens if a jumper is placed from node A to node B? Calculate V_A and V_B, and magnitude and direction of the current through the jumper. The resistor values are R1=R2=2 kohms, R3=R4=1 kohm. 2. Relevant equations Kirchhoff's voltage and current laws. 3. The attempt at a solution Okay, so I know that connecting a wire between A and B will make V_A=V_B. I was wondering if there's an intuitive way to find the current quickly without using Kirchhoff's loop rules. I tried Kirchhoff's voltage law and it seems that the current is zero. But I'm not sure if I'm right.