Consider the following configuration.
EMF2 = 3 V
R1 = 600 Ohm
R3 = 100 Ohm
1. Calculate the current i1.
2. Calculate the current i3.
Kirchoff's circuit laws:
1. Sum of current into any node is zero.
2. Sum of voltages around any loop is zero.
The Attempt at a Solution
I know that the potential at point A is 6 V because of the battery. I can't figure out how to calculate i1. I think I somehow have to use Kirchoff's rule, but I just don't know how. I tried to set up a voltage equation: EMF1 -i1R1 - i3R3 = 0. I don't know if that's right but it still has two unknowns. For i3, it seems like I have to know what i1 is to calculate it. Any help is appreciated!