Dividend: This is a Revenue Receipt as it is a regular income for the government from its investments.
Sale of Shares: This is a Capital Receipt as it involves the sale of government assets.
Debt Repayment: This is a Capital Receipt as it reduces the liabilities of the government.
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 \( r \).