"The Indian economy has witnessed a sharp turnaround during 2023 – 24 with Foreign Direct Investments (FDI) inflows of US $ 70.9 Bn and net Foreign Portfolio Investments (FPI) inflows of US 32.4 Bn."In which account of Balance of Payments will the given variables be entered and why?
A battery of emf \( E \) and internal resistance \( r \) is connected to a rheostat. When a current of 2A is drawn from the battery, the potential difference across the rheostat is 5V. The potential difference becomes 4V when a current of 4A is drawn from the battery. Calculate the value of \( E \) and \( r \).