1. The problem statement, all variables and given/known data The figure represents a part of a circuit, and the potential difference between the f and d is 12Volts, depending on the information shown in the figure, determine: 1-the reading of the Ammeter 2-the value of (Vb)₃ 3- the potential difference between (c , b) 2. Relevant equations Ohm's law: Vb=I (R+r) Kirchhoff's law: ΣI=0 ΣV=ΣIR 3. The attempt at a solution Seriously, I got confused with all these batteries, and I considered that the total current is 3A, since Vfd=12. So, I know there may be a lot of mistakes in my solution, and I would appreciate any help or explanation of how those whole batteries would work and produce the total current.