1. The problem statement, all variables and given/known data What is the p.d. across EC? Sorry about the bad drawing. 2. Relevant equations 3. The attempt at a solution I know you need to split the 4 V into the 2 k ohms, 2 k ohms and 1 kilo ohm. The answer is 3 V. I'm not sure how to get this answer. Someone explain please?