Practice IB Economics Topic 2.8 Market Failure - Externalities, Common Pool Resources, Public Goods, Asymmetric Information with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 2.8 Market Failure - Externalities, Common Pool Resources, Public Goods, Asymmetric Information and mirrors Paper 1, 2, 3 style where relevant.
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With the aid of a correctly labelled negative production externality diagram, explain how tradable permits can be used to address the market failure caused by negative production externalities.
Evaluate the effectiveness of tradable permits in reducing negative production externalities, considering at least two impacts and using real-world examples.
Germany is Europe’s largest economy and one of the world’s leading exporters. In , Germany’s total exports, mainly in machinery and automobiles, contributed significantly to its economic growth. However, the economy faces challenges such as rising energy costs, concerns about income inequality, and the need to fulfill environmental targets. The German government maintains a progressive tax system and actively uses fiscal policy to stabilize economic fluctuations.
Economic Data
Table 1 shows selected macroeconomic indicators for Germany in and :
Table 1: Selected macroeconomic data for Germany (–)
| Indicator | 2021 | 2022 |
|---|---|---|
| Real GDP (billion euros) | ||
| Unemployment rate (%) | ||
| Inflation rate (%) | ||
| Gini coefficient |
Recent government data suggest that Germany’s marginal propensity to consume (MPC) remains at approximately , prompting discussions about the potential impact of government spending on aggregate demand through the Keynesian multiplier.
Automobile Market
Germany’s automobile industry is a vital component of its economy. Domestic demand for passenger cars is sensitive to price changes, especially with rising competition from electric vehicles. Table 2 presents simplified data for the German passenger car market:
Table 2: Car market data in Germany
| Price per car (euros) | Quantity demanded (millions of cars/year) |
|---|---|
Tax System
Germany adopts a progressive personal income tax system, with higher tax rates levied on higher income brackets. Table 3 provides examples of tax rates on personal income in Germany:
Table 3: Selected personal income tax rates in Germany
| Annual taxable income bracket (euros) | Marginal tax rate (%) |
|---|---|
| – | |
| – | – |
| Above | – |
According to the German Ministry of Finance, these progressive tax rates aim to redistribute income and reduce inequalities. However, debates continue regarding the effectiveness of tax policy in narrowing income disparities.
Environmental Concerns
Germany’s car manufacturing sector faces pressure to reduce carbon emissions, which can impose negative externalities on society in the form of air pollution. Energy price increases have also affected production costs, potentially shifting supply and influencing equilibrium outcomes in domestic markets.
Using Table 1, calculate the approximate real GDP growth rate for Germany between and .
The German government plans to increase its spending by billion euros. Assuming the marginal propensity to consume (MPC) is , calculate the total potential increase in real GDP that may result from this spending, using the Keynesian multiplier. Show your working.
Using the arc (midpoint) method and the data in Table 2, calculate the price elasticity of demand for passenger cars in Germany when the price increases from euros to euros.
Using the data in Table 2, calculate the change in total revenue for manufacturers when the price increases from euros to euros.
Define the term “progressive tax.”
Using a supply and demand diagram, explain how rising energy costs for German car producers might affect the equilibrium price and quantity of cars.
Using Table 1, calculate the percentage change in the inflation rate from to (relative to the rate). Show your working.
Using information from the text and Table 3, explain how Germany’s progressive tax system might influence income inequality.
Using the text/data provided and your knowledge of economics, recommend a policy which the German government could implement to reduce negative externalities arising from carbon emissions in the car manufacturing sector. Justify your recommendation.
Poland is a Central European country with a population of million (). Since joining the European Union (EU) in , Poland has experienced significant economic growth. In , Poland’s real GDP grew by , following a expansion in . Unemployment remains relatively low at . However, inflation has risen to . Poland’s Gini coefficient stands at , suggesting a moderate level of income inequality.
Poland’s primary exports (machinery, vehicles, furniture, and electronic devices) go mainly to Germany, the Czech Republic, the United Kingdom, and France. Although the country has diversified, it still relies heavily on coal for electricity generation (about ), raising environmental concerns. The Polish government has begun investing in renewables, particularly wind energy, but continues to face pressure from the EU to reduce carbon emissions.
Table 1: Poland’s Real GDP Growth and nominal GDP (PLN billions), 2019–2022
| Year | Real GDP Growth (%) | GDP (PLN billions) |
|---|---|---|
| 2019 | 4.1 | 2,200 |
| 2020 | -2.2 | 2,150 |
| 2021 | 5.9 | 2,310 |
| 2022 | 4.9 | 2,420 |
Table 2: Taxation in Poland (2022)
| Type of tax | Rate of tax |
|---|---|
| Corporate income tax | 19 % |
| Personal income tax | Progressive tax (17 % up to 85,528 PLN, then 32 %) |
| VAT | 23 %, 8 %, 5 % (depending on products) |
Table 3: Selected Trade Data for Poland in 2022
| Category | Value in EUR (billion) |
|---|---|
| Exports | 281 |
| Imports | 284 |
| Balance of trade (exports − imports) | –3 |
| Main export partner: Germany | 28 % of total exports |
Using the information provided in Table 1, calculate the average annual real GDP growth rate for Poland over the period 2019–2022.
Assume the price elasticity of demand (PED) for Polish coal is . If a proposed carbon tax is expected to increase the price of coal by , calculate the likely percentage decrease in quantity demanded.
Using the data in Table 3, calculate the 2022 trade balance as a percentage of Poland’s exports. Express your answer as a percentage (including the sign).
Using Table 1, calculate the percentage increase in GDP from 2021 to 2022.
Define the term “progressive tax.”
Using an AD/AS diagram, explain how an increase in investment in renewable energy might affect Poland’s macroeconomy in the short run.
Using data from Table 3, calculate the value of Poland’s exports to Germany in 2022 in EUR billions.
Using the information from the text, explain two possible consequences of Poland’s continued reliance on coal for its economic development.
Using the text/data provided and your knowledge of economics, recommend a policy which the Polish government could implement in order to address the rising inflation rate.
Explain the differences between movements along the supply curve and shifts of the supply curve.
Using real-world examples, evaluate the view that subsidy is the most effective policy to encourage the consumption of merit goods.
Using real-world examples, discuss the effectiveness of subsidies in addressing positive externalities of production.
Explain the concept of positive externalities of production.