CBSE Class 12 Macro Economics Chapter 6: Open Economy Macroeconomics NCERT Solutions

Solution: The key distinctions between the Balance of Trade (BOT) and the Current Account Balance (CAB) are as follows:

1. Scope: Balance of Trade specifically refers to the difference between the value of exports and imports of only visible goods. In contrast, the Current Account Balance is a broader measure that includes the trade of visible goods, services (like shipping, tourism, insurance), income (like wages and profits), and unilateral transfers (like gifts and aid).
2. Inclusivity: BOT focuses solely on tangible goods that can be physically seen crossing borders. CAB encompasses both these visible items and 'invisibles', which are intangible economic transactions.
3. Relationship: The Balance of Trade is a component of the Current Account Balance. Therefore, the CAB provides a more comprehensive picture of a country's international transactions in goods, services, and income flows than the BOT alone.

Solution: Official reserve transactions are those transactions undertaken by the monetary authority of a country (such as the central bank) that directly affect the country's official reserves of foreign currency and other international assets. These transactions involve the buying or selling of foreign currency in the foreign exchange market.

Importance in Balance of Payments:

1. Adjustment Mechanism: Official reserve transactions play a crucial role in adjusting imbalances in the overall Balance of Payments (BOP). When a country experiences a deficit in its BOP (meaning it is spending more foreign currency than it is earning), the monetary authority can sell foreign currency from its official reserves to meet the excess demand for foreign currency, thereby financing the deficit.
2. Surplus Management: Conversely, when a country has a surplus in its BOP (earning more foreign currency than it is spending), the monetary authority can buy foreign currency and add it to the official reserves. This action helps to prevent excessive appreciation of the domestic currency.
3. Indicator of BOP Status: Changes in official reserves serve as an indicator of the overall BOP position. An increase in official reserves signifies an overall BOP surplus, while a decrease indicates an overall BOP deficit.
4. Credit/Debit Entry: The purchase of its own currency by the monetary authority is recorded as a credit item in the BOP accounts (as it implies an inflow of foreign currency or reduction of foreign liabilities), and the sale of its own currency is a debit item.

Solution:

The distinction between the nominal and real exchange rates is fundamental in understanding international trade and purchasing power:

Nominal Exchange Rate (e): This is the rate at which one currency can be exchanged for another. It is simply the price of a foreign currency expressed in terms of the domestic currency. For example, if the nominal exchange rate is 66 INR per 1 USD, it means you need 66 Indian Rupees to buy one US Dollar.

Real Exchange Rate (e_r): This rate measures the relative price of foreign goods in terms of domestic goods. It adjusts the nominal exchange rate for differences in price levels between the two countries. The formula for the real exchange rate is:

$$e\_r\; =\; e\; \backslash times\; \backslash frac\{P\_f\}\{P\}$$

Where:

• $e$ is the nominal exchange rate (domestic currency per unit of foreign currency).
• $P\_f$ is the price level of foreign goods (in foreign currency).
• $P$ is the price level of domestic goods (in domestic currency).

Relevance for Purchasing Decisions:

If you are deciding whether to buy domestic goods or foreign goods, the real exchange rate is more relevant. This is because it tells you how many units of domestic goods you would need to trade to obtain one unit of foreign goods. The nominal exchange rate only tells you how many units of domestic currency are needed to buy a unit of foreign currency, without considering the prices of goods in each country.

Example: Suppose 1 kg of potatoes costs $2 in the US and Rs 10 in India. The nominal exchange rate is 66 INR per USD.

The cost of 1 kg of US potatoes in INR is $2\; \backslash times\; 66\; =\; 132$ INR.

The real exchange rate calculation would be:

$$e\_r\; =\; 66\; \backslash times\; \backslash frac\{2\}\{10\}\; =\; 66\; \backslash times\; 0.2\; =\; 13.2$$

This means that the price of foreign goods (US potatoes) is equivalent to 13.2 times the price of domestic goods (Indian potatoes). This relative price comparison is what guides the decision on where to buy goods from.