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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(a) , with the aid of a correctly labelled positive consumption externality (merit good) diagram, why merit goods are underconsumed and how a reduction in an indirect tax on a merit good would affect consumption and welfare.
(b) Using real-world examples, the effectiveness of tax cuts in increasing the consumption of merit goods.
(e) the term “progressive tax.”
(f) Using a supply and demand diagram, how rising energy costs for German car producers might affect the equilibrium price and quantity of cars.
(g) Using Table 1, the percentage change in the inflation rate from to (relative to the rate). Show your working.
(h) Using information from the text and Table 3, how Germany’s progressive tax system might influence income inequality.
(i) 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. your recommendation.
Explain how government subsidies can be used to address the market failure caused by positive production externalities.
how government subsidies can be used to address the market failure caused by positive production externalities.
(a) , with the aid of a correctly labelled negative externality of consumption diagram, why the overconsumption of a common pool resource leads to market failure.
(b) Using real-world examples, the effectiveness of legislation and regulation in reducing the externalities caused by the overconsumption of common pool resources.
(a) With the aid of a correctly labelled negative production externality diagram, how tradable permits can be used to address the market failure caused by negative production externalities.
(b) 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 (%) |
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
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
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.
(a) Using Table 1, the approximate real GDP growth rate for Germany between and .
(b) The German government plans to increase its spending by billion euros. Assuming the marginal propensity to consume (MPC) is , the total potential increase in real GDP that may result from this spending, using the Keynesian multiplier. Show your working.
(c) Using the arc (midpoint) method and the data in Table 2, the price elasticity of demand for passenger cars in Germany when the price increases from euros to euros.
(d) Using the data in Table 2, the change in total revenue for manufacturers when the price increases from euros to euros.
| Gini coefficient |
| Price per car (euros) | Quantity demanded (millions of cars/year) |
|---|
| Annual taxable income bracket (euros) | Marginal tax rate (%) |
|---|
| – | |
| – | – |
| Above | – |
