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AP Macroeconomics Practice Quiz: The Circular Flow and GDP

Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026

Test your understanding with short quizzes. This quiz has 10 questions to check your progress.

Question 1 of 10

The circular flow diagram illustrates that GDP can be measured by summing either the total income paid to households or the total:

All Questions (10)

The circular flow diagram illustrates that GDP can be measured by summing either the total income paid to households or the total:

A) expenditure on final goods and services.

B) value of intermediate goods.

C) savings held by financial institutions.

D) taxes collected by the government.

Correct Answer: A

The circular flow diagram shows two primary flows: the flow of income from firms to households and the flow of expenditure from households to firms. The model demonstrates that these two flows must be equal, providing two ways to measure GDP.

Which of the following lists the three distinct methods for measuring Gross Domestic Product (GDP)?

A) The nominal, real, and potential approaches.

B) The household, business, and government approaches.

C) The expenditures, income, and value-added approaches.

D) The production, consumption, and savings approaches.

Correct Answer: C

The provided content explicitly states that there are three ways of measuring GDP: the expenditures approach, the income approach, and the value-added approach.

GDP is calculated as a measure of the 'final output' of an economy primarily to:

A) exclude the value of services, which are not final.

B) avoid the problem of double-counting intermediate goods.

C) simplify the calculation for government statisticians.

D) only include goods that are exported.

Correct Answer: B

If the value of intermediate goods (e.g., flour sold to a baker) were counted, their value would be counted again in the price of the final good (e.g., bread). Measuring only final output prevents this double-counting and ensures an accurate measure of economic production.

An economy produces only two goods: 20 shirts at $25 each and 100 books at $15 each. Assuming these are final goods, what is the nominal GDP of this economy?

A) $500

B) $1,500

C) $2,000

D) $3,500

Correct Answer: C

Nominal GDP is calculated by multiplying the quantity of each final good by its current price and summing the results. (20 shirts * $25/shirt) + (100 books * $15/book) = $500 + $1,500 = $2,000.

A lumber company sells wood to a furniture manufacturer for $500. The manufacturer builds a table and sells it to a retailer for $1,200. The retailer sells the table to a consumer for $1,800. What is the total contribution to GDP from these transactions according to the value-added approach?

A) $500

B) $1,200

C) $1,800

D) $3,500

Correct Answer: C

GDP measures the value of final output. The final price of the table is $1,800. Using the value-added approach, the sum of the value added at each stage is ($500) + ($1200 - $500) + ($1800 - $1200) = $500 + $700 + $600 = $1,800. Both methods yield the final market price.

The income approach to measuring GDP involves summing the income earned by all factors of production. This is equivalent to the expenditures approach because:

A) the government mandates that total income must equal total spending.

B) every dollar of spending by a buyer becomes a dollar of income for a seller.

C) all firms are required to pay out all revenue as income.

D) net exports are always equal to zero in a closed economy.

Correct Answer: B

The circular flow model is built on the principle that every transaction has a buyer and a seller. The amount spent by the buyer is, by definition, the income received by the seller. Therefore, summing all expenditures must equal summing all incomes.

Which of the following transactions would be counted in GDP when using the expenditures approach?

A) A car manufacturer purchasing tires for a new car.

B) A student purchasing a used textbook.

C) A family paying a contractor to build a new house.

D) An investor buying 100 shares of a company's stock.

Correct Answer: C

The construction of a new house is considered an investment expenditure on a final good and is included in GDP. The tires are an intermediate good (A), the used textbook was counted when it was new (B), and stocks are financial assets, not goods or services (D).

The circular flow diagram represents the total flow of income and expenditure in an economy. The two main participants represented in the simplest version of this model are:

A) banks and the government.

B) households and firms.

C) importers and exporters.

D) producers and consumers.

Correct Answer: B

The basic circular flow diagram illustrates the interactions between households, which supply factors of production and purchase goods, and firms, which hire factors of production and sell goods.

If nominal GDP is calculated by summing the total flow of expenditure in the economy, which of the following represents a component of this calculation?

A) Wages paid to workers.

B) Profits earned by corporations.

C) Government spending on new infrastructure.

D) Taxes paid by households.

Correct Answer: C

The expenditures approach to GDP includes Consumption (C), Investment (I), Government Spending (G), and Net Exports (NX). Government spending on new infrastructure falls under the 'G' component. Wages and profits are components of the income approach, not the expenditures approach.

The fact that GDP can be measured through the expenditures, income, or value-added approach and yield the same result is a core concept in macroeconomics. This equivalence is best represented by:

A) the law of supply and demand.

B) the concept of opportunity cost.

C) the production possibilities frontier.

D) the circular flow diagram.

Correct Answer: D

The circular flow diagram is the model that visually represents how the total flow of expenditure on final goods and services is equal to the total flow of income paid to the factors of production, thus illustrating why the different GDP measurement approaches are equivalent.