1. The problem statement, all variables and given/known data What is the current between points A and B? The current I is unknown. The voltage is 12V. R1 = 3 Ohm R2 = 6 Ohm R3 = R4 = 4 Ohm 2. Relevant equations U= R*I 3. The attempt at a solution Total resistance from both branches: 1/R = 1/(R_1+R_3) + 1/(R_2+R_4) 1/R = 1/7 + 1/10 R = 1/(1/7 + 1/10) = 1/17/70 = 70/17 Ohm Total current from both branches: I = U/R = 12/(70/17) = 72/35 A Here I get lost. Even If I can calculate the current that goes through each resistance (which I don't know how to do.) I don't know how I should determine how much current that goes from point A to B and/or vice versa.