1. The problem statement, all variables and given/known data In the circuit the emf is 150V connected across a resistance network. Each resistor has a value of 10 ohms. What is the current through R2? 2. Relevant equations R=V/I 3. The attempt at a solution I found that the resistance of R2 and R3 because they're in a series is 20 ohms. And because R1 is parallel to R2 and R3 i found the resistance to be 6.67 ohms. So the total resistance of the circuit would be 16.67 ohms including R4. And then I found that the total current drawn from the emf would be 8.998A. Now I'm just not sure how to isolate R2's current.