Problem 1: Consumer Choice
According to the Law of Diminishing Marginal Utility, what happens as a consumer consumes additional units of a specific good?
A) Total utility decreases with every unit consumed
B) The additional satisfaction gained from each new unit decreases
C) Marginal utility increases exponentially
Fact: While total utility may still rise overall, marginal utility (the added utility from consuming one more unit) falls as consumption increases.
Problem 2: Elasticity of Demand
If a 10% increase in the price of a product leads to a 2% decrease in quantity demanded, how is the demand for this product characterized?
A) Elastic
B) Inelastic
C) Unit Elastic
Fact: When percentage change in quantity demanded (2%) is smaller than percentage change in price (10%), absolute price elasticity is less than 1 (0.2), making it inelastic.
Problem 3: Profit Maximization
At what point does a profit-maximizing firm in any market structure set its level of output?
A) Where Marginal Revenue equals Marginal Cost (MR = MC)
B) Where Price equals Average Total Cost (P = ATC)
C) Where Total Revenue reaches its absolute maximum
Fact: A firm maximizes profits where MR = MC. If MR > MC, producing more adds to profit; if MR < MC, producing more reduces profit.
Problem 4: Price Interventions
What is the typical consequence of a binding price ceiling set legally below the natural market equilibrium price?
A) A surplus of goods as suppliers overproduce
B) A chronic shortage of goods as quantity demanded exceeds quantity supplied
C) An immediate decrease in consumer demand
Fact: Setting a maximum price below market equilibrium boosts quantity demanded while suppressing quantity supplied, leading directly to a market shortage.
Problem 5: Market Structures
Which market structure features a few large, mutually interdependent firms that engage in strategic decision-making (game theory)?
A) Perfect Competition
B) Monopolistic Competition
C) Oligopoly
Fact: An oligopoly is dominated by a small number of sellers whose decisions directly impact one another, making strategic interdependence a key defining trait.
Problem 6: Cost Theory
When Marginal Cost (MC) is less than Average Total Cost (ATC), what happens to ATC as output increases?
A) Average Total Cost decreases
B) Average Total Cost increases
C) Average Total Cost remains unchanged
Fact: Whenever an additional (marginal) unit costs less than the current average, it pulls the overall average cost down.
Problem 7: Types of Goods
If a consumer's demand for Good X decreases as their income increases, how is Good X classified?
A) Normal Good
B) Inferior Good
C) Complementary Good
Fact: An inferior good is defined by a negative income elasticity of demand; consumers buy less of it as their purchasing power grows.
Problem 8: Welfare & Efficiency
What term describes the loss in total economic surplus (consumer plus producer surplus) caused by market inefficiencies like taxes or monopolies?
A) Marginal Loss
B) Deadweight Loss
C) Excess Supply
Fact: Deadweight loss represents uncaptured economic value—trade opportunities that fail to occur because price or output deviates from social efficiency.
Problem 9: Externalities
What type of market failure occurs when a factory emits pollution during production without paying for environmental cleanup?
A) Negative Externality
B) Positive Externality
C) Free-Rider Problem
Fact: A negative externality imposes uncompensated costs onto third parties. Because private costs are lower than social costs, markets overproduce the good.
Problem 10: Public Goods
Public goods are characterized by which two core features?
A) Non-rivalrous and Non-excludable
B) Rivalrous and Excludable
C) Excludable and Non-rivalrous
Fact: A public good (like national defense) cannot easily prevent non-paying users from consuming it (non-excludable), and one person's consumption doesn't diminish availability to others (non-rivalrous).