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## Homework Statement

Consider the following configuration.

Given:

EMF1=6 V

EMF2 = 3 V

R1 = 600 Ohm

R3 = 100 Ohm

1. Calculate the current

*i1*.

2. Calculate the current

*i3*.

## Homework Equations

V=IR

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!