If the government imposes a price ceiling on the market for ice cream at 4.00, but the equilibrium price is 3.00, what is the most likely market outcome?
Consider whether the legal limit actually interferes with the market's ability to reach its natural balance.
When a price ceiling is set above the equilibrium price, it is considered non-binding and does not prevent market forces from reaching the natural equilibrium.
Sellers cannot raise the price above equilibrium without creating a surplus, and a non-binding ceiling does not force the price upward.
Shortages only occur when the ceiling is binding, meaning it is set below the equilibrium price.
A price ceiling represents a movement along the curves due to a price change or a legal limit, not a shift in the supply curve itself.
Question 2/ 30
Which of the following describes the effect of a binding price floor?
Think about how a minimum price above equilibrium changes the incentives for both buyers and sellers.
A binding price floor is set above the equilibrium, encouraging more production while discouraging consumption.
This outcome describes a price ceiling, which discourages production by keeping prices artificially low.
The surplus persists because the law prevents the price from falling to the equilibrium level where the surplus would disappear.
A change in price causes a movement along the demand curve, not a shift in the entire demand schedule.
Question 3/ 30
What is meant by the term 'tax incidence'?
This concept focuses on the ultimate 'payer' of the tax in an economic sense.
Tax incidence looks at the final economic burden, which may differ from the party that physically pays the tax to the government.
While collection is part of taxation, incidence specifically refers to who ultimately 'feels' the cost of the tax.
Incidence refers to the distribution of the burden, not specifically the direction of a curve shift.
Total revenue is a measure of government income (T × Q), whereas incidence is about the burden sharing.
Question 4/ 30
When a binding price ceiling is imposed, what usually happens to the quality of the good over time?
Consider the incentives for a landlord when there are fifty people waiting for one apartment.
Because there is a shortage (more buyers than goods), sellers do not need to maintain high quality to attract customers.
Sellers in a shortage already have too many customers, so they are more likely to cut costs by reducing quality.
Sellers often respond to price caps by reducing investment in maintenance or features to preserve profit margins.
Inefficiency often increases under price controls because resources are not allocated to their highest-value uses.
Question 5/ 30
If the government levies a tax on the sellers of a product, how does the supply curve typically shift?
Think about what price sellers must charge now to cover their costs plus the new tax payment.
Sellers require a higher market price to receive the same net amount as they did before the tax.
A downward shift would imply that sellers are willing to provide more at lower prices, which is the opposite effect of a tax.
Taxes generally change the position of the curve, not its slope or elasticity, unless the tax structure itself is non-linear.
While a tax on sellers is economically equivalent to a tax on buyers, the literal shift depends on who is legally responsible for the tax.
Question 6/ 30
According to the general rule of tax incidence, who bears the larger portion of a tax burden?
Elasticity measures how easily a buyer or seller can respond to unfavorable changes.
Inelasticity indicates a lack of alternatives or a necessity, making that party less able to 'leave' the market to avoid the tax.
Elastic participants can easily change their behavior or find substitutes, allowing them to shift the burden to others.
The legal requirement to pay does not determine the final economic burden; market forces do.
The number of participants doesn't dictate burden; rather, it is their responsiveness to price changes (elasticity) that matters.
Question 7/ 30
In the market for labor, if the minimum wage is set at 15.00 while the equilibrium wage is 12.00, what is the resulting effect?
A minimum wage is a price floor for labor. Compare the quantity supplied by workers to the quantity demanded by firms.
The higher wage attracts more workers (supply) but makes hiring more expensive for firms (demand), leading to a surplus of labor.
A shortage occurs when quantity demanded exceeds quantity supplied; a high wage causes the opposite.
Since 15.00 is higher than the equilibrium of 12.00, it is a binding constraint that forces the wage up.
While some workers earn more, others lose their jobs entirely, so the impact on total income depends on the elasticity of labor demand.
Question 8/ 30
Suppose the demand for a luxury yacht is highly elastic, while the supply of yachts is highly inelastic. If the government imposes a 'luxury tax' on yachts, who bears most of the burden?
Recall which side of the market has fewer alternatives when the price changes.
Because buyers are sensitive to price (elastic demand), they will stop buying yachts if the price rises; the sellers, who cannot easily change production (inelastic supply), must absorb the cost.
Elastic demand means these buyers will simply spend their money on other luxuries instead of bearing the tax.
While revenue might be lower than expected, 'tax burden' refers to the loss in surplus by market participants.
Market forces, not social fairness or 'equally shared' assumptions, determine the final distribution of a tax burden.
Question 9/ 30
Consider a market described by the following equations: Qd = 20 - P and Qs = 2P - 4. At what price would a price ceiling be considered 'binding'?
Calculate the equilibrium price first, then determine which direction a restriction must be to limit the market.
First, solve for equilibrium: 20 - P = 2P - 4 ⇒ 3P = 24 ⇒ P = 8. A ceiling is binding only if it is below the equilibrium price.
A ceiling above equilibrium has no effect because the market can still reach its natural balance point.
At the equilibrium price, the quantity demanded equals quantity supplied, so the restriction is not constraining the market.
This range includes the equilibrium price; only the portion below $8 is binding for a ceiling.
Question 10/ 30
If a tax of 50 per unit is imposed on a market where P_b is the price buyers pay and P_s$ is the price sellers receive, what equation represents the tax wedge?
Think about the gap created between the price paid by the consumer and the net price kept by the producer.
The tax creates a 'wedge' between what the consumer spends and what the producer keeps, which equals the tax amount.
This would imply sellers receive more than buyers pay, which describes a subsidy rather than a tax.
This does not represent a price difference; it erroneously sums the two distinct prices.
This represents a market with no tax, where the price paid and price received are identical.
Question 11/ 30
Refer to Table 5-5. Using the midpoint method, calculate the price elasticity of demand between the prices of 2 and 4.
Apply the midpoint formula: Percentage change in quantity divided by percentage change in price, using averages for the denominators.
Using the midpoint formula: (30-40)/35(4-2)/3 = -0.28570.6667 ≈ -0.43. Elasticity is usually expressed as an absolute value.
This would be the result if the numerator and denominator were inverted, calculating price responsiveness to quantity.
This indicates unit elasticity, but the percentage change in quantity is smaller than the percentage change in price.
This might result from using the initial values instead of the midpoint (average) values in the denominator.
Question 12/ 30
Which of the following is a non-price rationing mechanism that often arises when a binding price ceiling is in place?
When goods are scarce and prices can't move, how else might people decide who gets the item?
Since the price cannot rise to clear the market, buyers must compete using their time instead of their money.
Bidding wars raise the price, which is exactly what a price ceiling legally prohibits.
Under a ceiling, there is already a shortage, so sellers have more customers than they can serve and don't need to advertise.
Price ceilings reduce the profitability of production, making firms less likely to invest in more capacity.
Question 13/ 30
In the long run, rent control usually results in a larger shortage than in the short run. Why?
Consider how the ability of landlords and tenants to change their behavior changes as more time passes.
Over time, landlords can stop building or maintain houses, and renters can move into or out of a city, increasing responsiveness to price.
The magnitude of the shortage grows because participants' behavior changes, even if the legal limit remains constant.
Even for necessities, long-run demand is more elastic as people find roommates or relocate to other cities.
Supply is actually more elastic in the long run because new construction can be halted or existing buildings can be converted to other uses.
Question 14/ 30
Suppose the market for watches has demand P = 500 - 10Q and supply P = 100 + (10/3)Q. What is the equilibrium quantity?
Equate the demand and supply equations and solve for the variable representing quantity.
This is the equilibrium price (P = 500 - 10(30) = 200), not the equilibrium quantity.
This would result from an error in combining the Q terms on one side of the equation.
This might be the result if the slope of the supply curve was treated as 10 instead of 103.
Question 15/ 30
If an excise tax is imposed on a market, the 'deadweight loss' represents:
Think about the trades that no longer happen because the tax makes them unprofitable or too expensive.
A tax shrinks the market size, preventing trades where the value to the buyer exceeds the cost to the seller but is less than the tax wedge.
Tax revenue is a transfer from participants to the government; it is not a 'loss' to society as a whole in this model.
Deadweight loss includes the lost surplus for both consumers and producers.
While those are real costs, 'deadweight loss' in microeconomics specifically refers to the loss of market efficiency.
Question 16/ 30
According to Figure 6-2, what is the size of the shortage caused by the price ceiling?
Identify the quantity demanded and quantity supplied at the price level of 3 and calculate the difference.
At the ceiling price of 3, quantity demanded is 180 and quantity supplied is 90; 180 - 90 = 90$.
This is the difference between the supply at the ceiling and the equilibrium quantity (120 - 90 = 30 is half of this).
This is the difference between the equilibrium quantity and the quantity supplied at the ceiling price.
This is the total quantity demanded at the ceiling price, not the gap between demand and supply.
Question 17/ 30
When the government imposes a tax on a good, which of the following is true regarding the new market equilibrium?
How does an increased cost for sellers or an increased price for buyers affect the total volume of trade?
The tax wedge increases the price to buyers and decreases the price to sellers, leading to lower consumption and production.
The tax is usually shared between buyers and sellers; the price only rises by the full tax if supply is perfectly elastic or demand is perfectly inelastic.
Total spending (P × Q) depends on the elasticity of demand; if demand is inelastic, spending could actually increase.
A tax is a cost increase, which shifts the supply curve to the left (or upward).
Question 18/ 30
Regarding the FICA (Social Security) payroll tax, why do most economists believe workers bear the majority of the burden despite the law splitting the tax 50-50 between firms and workers?
Review the principle that the tax burden falls on the less responsive side of the market.
Workers have fewer alternatives than firms, meaning they are less responsive to wage changes and thus absorb more of the tax burden.
While lobbying exists, the economic incidence is determined by market elasticities, not political influence over collection.
If labor demand were perfectly inelastic, firms would bear the entire burden, not workers.
The tax is collected as mandated, but the market adjusts wages downward to shift the economic cost to the workers.
Question 19/ 30
A binding price floor in the market for wheat is most likely to lead to which action by the government?
Think about what happens to the 'excess' production that cannot be sold to private buyers.
To maintain the price floor, the government often buys the excess supply that consumers are unwilling to purchase at the high price.
Rationing is a response to shortages (price ceilings); surpluses mean there is more wheat than people want at that price.
While possible, the most direct result of a floor is a surplus that the government must manage, often through purchases or subsidies.
A price floor for wheat increases the costs for bread makers, which would naturally raise bread prices without further government intervention.
Question 20/ 30
If a tax is increased, what is the expected relationship between the tax size and the deadweight loss?
Recall the geometric formula for the area of a triangle representing the lost gains from trade.
Deadweight loss is the area of a triangle (1/2 × textbase × textheight); doubling the tax doubles both base and height, quadrupling the loss.
Because the deadweight loss is proportional to the square of the tax rate, the relationship is non-linear.
This describes the Laffer curve for tax revenue, not the deadweight loss, which always grows as the market is further distorted.
Both the tax size and the elasticity determine the magnitude of the deadweight loss.
Question 21/ 30
Using the watch market equations (Pd = 500 - 10Q and Ps = 100 + 103Q), calculate the new equilibrium quantity if a $50 excise tax is imposed on producers.
Insert the tax into the supply-demand equality by setting Pb = Ps + texttax and solving for Q.
This is the original equilibrium quantity before the tax was applied.
This would result from an arithmetic error in simplifying the Q coefficients or the constant terms.
This is a common 'guess' but does not satisfy the algebraic requirement of the tax wedge.
Question 22/ 30
If the government removes a tax on buyers and instead levies a tax of the same size on sellers, how does the quantity sold change?
Think about the total 'wedge' placed between the buyer's cost and the seller's revenue.
Taxes on buyers and sellers are economically equivalent; the wedge between the price buyers pay and sellers receive remains identical.
Buyers will still pay a higher market price because sellers shift their portion of the burden onto the buyers.
The final quantity depends on the total tax wedge and the elasticities of the market, not on which party legally remits the tax.
The shift in the supply curve (upward) is exactly equal to the shift in the demand curve (downward) for a tax of the same size.
Question 23/ 30
Suppose the demand for grape jelly is perfectly elastic and the supply is unit elastic. If a tax is imposed on grape jelly, who bears the burden?
Consider which party is 'most' willing to leave the market when the price changes.
Perfectly elastic demand means buyers will leave the market entirely if the price rises at all; therefore, sellers must absorb the full tax to maintain any sales.
This only happens if demand is perfectly inelastic or supply is perfectly elastic.
Equal sharing only occurs if the elasticities of supply and demand are equal.
The tax is still imposed, but it significantly reduces the market size and the burden falls on the producers.
Question 24/ 30
Refer to Figure 6-11. If a tax of 2 per unit is imposed, what happens to the price received by sellers (P_s$)?
Find the point on the supply curve where the quantity is the same as the new taxed equilibrium and read the price.
Looking at the graph, a tax wedge of 2 at quantity 60 puts the buyers' price at 6 and the sellers' price at 4 (6 - 4 = 2$).
This would represent a 4 tax wedge if the buyer's price stayed at 7, which is not supported by the equilibrium shift.
The price received by sellers always falls when a tax is introduced unless demand is perfectly elastic.
This would imply that sellers bear only 25% of the tax, but the graph shows a symmetrical wedge around the original equilibrium.
Question 25/ 30
What does the 'Laffer Curve' illustrate?
Consider what happens to the total revenue collected if the government tries to tax 100% of a transaction.
As the tax becomes very large, the market shrinks so much that even a higher rate yields less total revenue.
While related, the deadweight loss curve always slopes upward; the Laffer curve specifically tracks government revenue.
This describes changes in incidence or elasticity, not the relationship between tax size and revenue.
This describes the Phillips curve, which is a macroeconomic concept.
Question 26/ 30
If a policymaker's goal is to raise tax revenue while minimizing the deadweight loss to society, which type of goods should they target?
Look for goods where buyers and sellers won't change their behavior much even if the price changes.
Inelasticity means that quantity changes very little in response to the tax wedge, resulting in small deadweight losses and high revenue.
Highly elastic goods will see a massive drop in quantity, creating large deadweight losses and small amounts of revenue.
Luxury goods often have highly elastic demand, meaning a tax will significantly distort the market and hurt the suppliers (builders/workers).
The side on which the tax is levied does not affect the efficiency or the incidence of the tax.
Question 27/ 30
In a market with a binding price floor, what happens if the floor is raised even higher?
Determine how the gap between quantity supplied and quantity demanded changes as the price moves further from equilibrium.
A higher floor further increases the quantity supplied and decreases the quantity demanded, widening the gap.
Price floors cause surpluses; raising them makes the surplus worse, not a shortage.
Moving away from the equilibrium price (P^*) always increases the market distortion.
Total revenue depends on the elasticity of demand; if demand is elastic, the drop in quantity sold could outweigh the higher price.
Question 28/ 30
What is the primary reason that economists generally oppose price controls like rent control and minimum wage?
Recall the role of the 'invisible hand' and how it uses prices to coordinate economic activity.
Prices act as signals to both producers and consumers; suppressing them leads to inefficient shortages or surpluses.
While they can have negative effects, they do increase the income of those who keep their jobs or find affordable rent.
Price controls aren't designed to stop taxes; they are designed to manipulate the market price, which is a different policy goal.
Elasticity is a characteristic of participant preferences and technology, not a result of price controls.
Question 29/ 30
If the government imposes a price ceiling of 90 in a market where Q_d = 300 - P and Q_s = 2P$, what is the size of the shortage?
Determine if the ceiling is below the equilibrium price, then find the difference between demand and supply at that ceiling price.