circuit help -- resistors and batteries in a network 1. The problem statement, all variables and given/known data (a) Calculate the current through each ideal battery in Fig. 28-41. (As a sign convention, assume the currents are "up" through each battery.) A (I1) A (I2) A (I3) Assume that R1 = 1.5 , R2 = 2.5 , ε1 = 2.0 V, and ε2 = ε3 = 3.5 V. (b) Calculate Va - Vb 2. Relevant equations V=iR 3. The attempt at a solution I dont know how to approach this problem, use kirchhoffs law???