Question

My current answer will not work, please help

Apply the loop rule to loop aedcba in the figure below. (Use the following as necessary: I_1, I_2, R_1, R_2, R_3, R_1, r_2, E_1, for e_1, and e_2 for e_2.) Did you follow the path specified in the question statement? What is the potential difference for each resistor and battery in the loop? What condition decides if the potential difference across an element in a circuit is positive or negative? = 0

Answer 1

Follow from A, along the current.

-I2 R2 + E1 -I2 r1 - I1 R1 = 0;

If current flowing the same direction as the loop direction, potential across the resistor will drop. So potential difference is positive. or else potential difference is negative