1. The problem statement, all variables and given/known data Two batteries and three resistors are connected as shown in the figure. How much current flows through the 9.0 V battery? (a) When the switch is closed? (b) When the switch is open? 2. Relevant equations Kirchhoff's Loop Rule I=V/R 3. The attempt at a solution To find the current when the circuit is open, I totally disregarded the 5 ohm resistor and found the equivalent resistors of 2 and 4 and got 6. Then I used the equation I=9V/6 and that didn't work. For the current when the circuit is closed, I applied Kirchhoff's Loop rule and found the current for each loop then solved by adding the two. That didn't work so I redrew the diagram and placed the 5 ohm resistor between the 2 and 4 ohm resistor and tried to figure out the current of that loop, but it also didn't work. Additionally, does the 6 V battery in the drawing have anything to do with achieving the correct answer? Thank you very much.