A Level H2 Economics Market Failure Quiz

Answer Key - A-Level

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# Answer Key - A-Level Economics H2 Quiz: Market Failure

### Section A: Foundational Concepts
1. **Market Failure:** A situation where the free market fails to allocate resources efficiently, resulting in a net loss of social welfare (where MSB $\neq$ MSC). [2m]
2. **Public Good vs. Merit Good:** Public goods are non-excludable and non-rivalrous (e.g., national defense). Merit goods are under-consumed because individuals underestimate their long-term benefits or ignore external benefits (e.g., education). [4m]
3. **Asymmetric Information:** When one party in a transaction has more or superior information than the other. *Example:* A doctor knows more about the necessary treatment than the patient, potentially leading to over-prescription. [4m]
4. **Demerit Good Characteristics:** (1) Over-consumed due to information failure/short-termism; (2) Generates negative externalities for third parties. [2m]
5. **MSB vs. MPB:** MSB = MPB + External Benefit. In a positive externality, MSB > MPB because the consumption provides benefits to others (e.g., herd immunity from vaccines). [4m]

### Section B: Analytical Application
6. **Vaccinations:** Diagram should show MPB curve below MSB curve. Market equilibrium is at $MPB=MSC$, but social optimum is at $MSB=MSC$. The gap represents the under-consumption and resulting deadweight loss. [6m]
7. **Chemical Production:** Diagram showing MSC above MPC. Production occurs where $MPC=MPB$, leading to over-production. The area between MSC and MPB from the market quantity to the social optimum is the deadweight loss. [6m]
8. **Derived Demand:** Lithium is a factor of production for EV batteries. As demand for EVs $\uparrow$, the derived demand for lithium $\uparrow$, shifting the demand curve for lithium to the right, increasing price and quantity. [6m]
9. **Public Goods Provision:** (1) Free-rider problem: Private firms cannot charge for non-excludable goods, making them unprofitable. (2) Social Welfare: These goods provide essential security/stability that the market would ignore. [6m]
10. **Education Subsidy:** Diagram showing a downward shift in the MPC curve (or upward shift in MPB). The subsidy reduces the private cost, moving the market equilibrium toward the social optimum ($MSB=MSC$). [6m]
11. **Information Failure:** Consumers lack full knowledge of the long-term health risks (diabetes, obesity) of sugary drinks, leading them to perceive the MPB as higher than it actually is. [4m]
12. **Free-Rider Problem:** Since street lighting is non-excludable, people can benefit without paying. Private firms cannot capture revenue, leading to zero private provision despite high social demand. [4m]
13. **Production vs. Consumption Externality:** Production externalities occur during the making of a good (e.g., factory pollution). Consumption externalities occur when the user of the good affects others (e.g., second-hand smoke). [4m]
14. **Tobacco Tax:** Diagram showing MPC shifting upward to $MPC + Tax$. This increases the price and reduces quantity consumed, moving the market closer to the social optimum where $MSB=MSC$. [6m]
15. **Luxury vs. Healthcare:** Luxury goods are typically excludable and rivalrous with symmetric information regarding preference. Healthcare involves high asymmetric information and significant positive externalities (public health). [4m]

### Section C: Evaluative Response
16. **Permits vs. Regulation:** Permits provide a market-based incentive to innovate and allow the most efficient firms to pollute (cost-effective). Regulation is a "one size fits all" approach that may be too rigid or expensive to monitor. [8m]
17. **Government Failure:** Agreement depends on the risk of "Government Failure." Intervention can lead to inefficiency due to lack of information, political interference, or unintended consequences (e.g., black markets). [8m]
18. **Sin Taxes & Equity:** Taxes are efficient but regressive (burden low-income earners more). Alternative equitable methods include targeted education or subsidies for healthier alternatives. [8m]
19. **Education Campaigns:** Effective at correcting information failure by shifting the MPB curve. However, they are slow to work, expensive, and may be ignored if the price of organic produce remains prohibitively high. [8m]
20. **Subsidy vs. Price Ceiling:** Subsidies increase supply and consumption but create a fiscal burden (opportunity cost). Price ceilings make goods affordable but can lead to shortages and queues. [8m]