The money multiplier is calculated as 1 divided by the reserve ratio (1 / 0.20 = 5). When the central bank injects Rs 1,000 of base money into the banking system, the total potential expansion of the money supply is the initial injection multiplied by the money multiplier. Therefore, 1,000 * 5 equals Rs 5,000. This process assumes that all banks lend out their excess reserves fully and that there is no currency leakage.

A foreign bank is an institution that operates in a country other than its home country, often specializing in foreign currency-denominated transactions, deposits, and loans to facilitate international trade and cross-border capital flows.

A letter of credit is a financial instrument issued by a bank that guarantees a buyer's payment to a seller will be received on time and for the correct amount. It is widely used in international trade to facilitate secure transactions.

Bankruptcy is a legal proceeding involving a person or business that is unable to repay their outstanding debts. The process allows the debtor to seek relief from some or all of their debts, often under the supervision of a court, which may involve liquidating assets or restructuring debt.

While banks provide essential services like facilitating transactions and supplying credit, their fundamental objective as business entities is to maximize earnings. They achieve this by managing the spread between the interest paid on deposits and the interest earned on loans and investments, ensuring long-term profitability and sustainability.

A finance corporation is a non-bank financial institution that specializes in providing loans to consumers and businesses. Unlike commercial banks, they do not accept deposits from the public. Instead, they fund their lending activities by borrowing from other financial institutions or by issuing debt securities in the capital markets. They play a vital role in the economy by providing credit to individuals and firms that may not meet the strict lending criteria of traditional commercial banks.

Financial intermediaries, such as banks, credit unions, and insurance companies, act as conduits between those who have excess funds (lenders or savers) and those who require funds for investment or consumption (borrowers). By pooling savings and distributing them as loans, they reduce transaction costs and manage risks associated with direct lending.

A repurchase agreement, commonly known as a 'repo', is a short-term borrowing mechanism for dealers in government securities. The seller sells the securities to the buyer and simultaneously agrees to buy them back at a slightly higher price. The difference between the sale price and the repurchase price represents the interest paid on the loan, effectively making it a collateralized loan transaction.

Credit rating agencies evaluate the creditworthiness of debt issuers and their specific debt instruments, such as bonds, debentures, and commercial paper, to assess the risk of default. Shares represent equity ownership rather than debt; therefore, they do not carry a default risk in the same manner as debt instruments and are not rated by these agencies, though they may be analyzed by equity research firms.

For a commercial bank, loans represent assets because they are financial claims that generate interest income for the bank. Liabilities, conversely, consist of deposits held by customers that the bank owes back upon demand.