AP MICROECONOMICS UNIT 4 EXAM
PAPER 2026 COMPLETE QUESTIONS AND
ANSWERS GRADED A+
◉Are monopolies productively efficient?. Answer: No, they are not
producing at the lowest cost (minimum ATC). Instead, they will
maximize profit by finding MR=MC
◉Are monopolies allocatively efficient?. Answer: No, price is greater
and the monopoly is under producing
◉Why are monopolies inefficient?. Answer: 1) Charge a higher price
2) Don't produce enough (Not allocatively efficient)
3) Produce at higher costs (Not productively efficient)
4) Have little incentive to innovate (little external pressure to be
efficient)
◉Natural Monopoly. Answer: One firm can produce the socially
optimal quantity at the lowest cost due to economies of scale
-It is better to have only one firm because ATC is falling at socially
optimal quantity
, ◉socially optimal quantity. Answer: What society wants, or where
supply (MC) meets demand
◉Lump Sum. Answer: Does not change output, does not change MC
◉Why would the government regulate a monopoly?. Answer: 1) To
keep prices low
2) To make monopolies efficient
◉How does the government regulate monopolies?. Answer: Use
Price Controls: Price Ceilings
◉Why don't taxes work for regulating monopolies?. Answer: Taxes
reduce supply and that is the problem-monopolies are already unde-
rproducing to begin with
◉Socially Optimal Price. Answer: P=MC (Allocative Efficiency)
◉Fair-Return Price (Break-Even). Answer: P=ATC (Normal Profit, no
economic profit)
◉Where should the government place the price ceiling in a
monopoly?. Answer: Socially Optimal Price
-what society wants-using all resources
PAPER 2026 COMPLETE QUESTIONS AND
ANSWERS GRADED A+
◉Are monopolies productively efficient?. Answer: No, they are not
producing at the lowest cost (minimum ATC). Instead, they will
maximize profit by finding MR=MC
◉Are monopolies allocatively efficient?. Answer: No, price is greater
and the monopoly is under producing
◉Why are monopolies inefficient?. Answer: 1) Charge a higher price
2) Don't produce enough (Not allocatively efficient)
3) Produce at higher costs (Not productively efficient)
4) Have little incentive to innovate (little external pressure to be
efficient)
◉Natural Monopoly. Answer: One firm can produce the socially
optimal quantity at the lowest cost due to economies of scale
-It is better to have only one firm because ATC is falling at socially
optimal quantity
, ◉socially optimal quantity. Answer: What society wants, or where
supply (MC) meets demand
◉Lump Sum. Answer: Does not change output, does not change MC
◉Why would the government regulate a monopoly?. Answer: 1) To
keep prices low
2) To make monopolies efficient
◉How does the government regulate monopolies?. Answer: Use
Price Controls: Price Ceilings
◉Why don't taxes work for regulating monopolies?. Answer: Taxes
reduce supply and that is the problem-monopolies are already unde-
rproducing to begin with
◉Socially Optimal Price. Answer: P=MC (Allocative Efficiency)
◉Fair-Return Price (Break-Even). Answer: P=ATC (Normal Profit, no
economic profit)
◉Where should the government place the price ceiling in a
monopoly?. Answer: Socially Optimal Price
-what society wants-using all resources
