JEE Mains 25-Jan-2023 Shift 2 Solved Paper

Two cells are connected between points A and B as shown. Cell 1 has emf of 12V and internal resistance of 3Ω. Cell 2 has emf of 6V and internal resistance of 6Ω. An external resistor R of 4Ω is connected across A and B. The current flowing through R will be _______ A.