Money supply is a stock concept measured at a specific point in time, not over a period of time, making statement (i) incorrect.
Statement (ii) is incorrect because the government’s stock of money is not included in money supply.
Statement (iii) is also incorrect as money supply includes currency held by the public, not with the Central Bank.
Since all three statements are incorrect, the correct answer is (D) (i), (ii), and (iii).
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 \( r \).