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My question:

The batteries have emfs of E1=9.0 V and E2= 12.0 V and the resistors have values of R1=25 ohms, R2=18 ohms, and R3=35 ohms.Assuming each battery has internal resistance r=1.0 ohms find the direction and magnitude of the currents.

____R1______

|.....................|

E1...................|

|_____R2______|

|.....................|

E2...................R3

|_____________|

For this problem could I use this equation to find the currents.

V(ab)=E-Ir and I= V/R

Is this correct

Thank You