Economics Exam 2: Elasticity, Price Controls, International Trade, and Firm Production

Vocabulary practice flashcards covering tax incidence, price controls, international trade, tariffs, quotas, and competitive firm profit maximization based on economics lecture notes.

Tax Burden (Elasticity Rule)

The economic principle that the more inelastic (steeper) side of the market pays more of a tax; when supply is more elastic than demand, buyers pay more of the tax burden.

Tax Wedge

The vertical spread between the price paid by buyers and the price received by sellers caused by a tax, generating total tax revenue equal to the tax per unit multiplied by the post-tax quantity ($\text{Tax} \times Q_2$).

Futures Market

A financial market arrangement that reduces price risk compared to speculative markets where prices fluctuate and participants can easily lose more than their initial investment.

Price as a Signal

The concept that a price represents "a signal wrapped in an incentive," conveying critical economic information and embodying "collective wisdom."

Price Ceiling

A legally established maximum price ($P_c$) set by the government; when set below the market clearing equilibrium price ($P_1$), it creates a shortage where quantity demanded exceeds quantity supplied ($Q_D > Q_S$).

Rationing by Queues

A non-price rationing mechanism under a shortage where goods are distributed based on who is willing to wait in line the longest, making the consumer's true opportunity cost equal to the cash price plus the value of time spent waiting.

Binding Price Policy

A price control policy that alters market outcomes by actively preventing the price from reaching the equilibrium market-clearing level.

Means-Tested Housing Vouchers

An income-targeted government assistance program where voucher eligibility is directly tied to household income, serving as a market-compatible alternative to rent control price ceilings.

Price Floor

A legal minimum price set by the government below which market prices cannot fall, exemplified by minimum wage laws and agricultural price supports.

Price Taker

A producer (such as Farmer Jones selling corn) who is small relative to the global or domestic market and faces a horizontal, perfectly elastic demand curve at the prevailing market price.

Gains from Trade (Importing Economy)

The net societal benefit that occurs when opening to international trade lowers the domestic price to the world price ($P_W$), expanding consumer surplus by areas $B + C$, reducing domestic producer surplus by area $B$, and creating a net gain equal to area $C$.

Tariff Revenue

The total revenue collected by the government on imported goods, calculated as the quantity of imports multiplied by the tariff rate ($Q_{\text{imports}} \times \text{Tariff Rate}$).

Import Quota Permit Allocation

The three administrative methods by which a government distributes quota licenses to importers: auctions, first-come first-served, and bribes.

Diffused Costs and Concentrated Benefits

The political economy explanation for trade protectionism (such as U.S. sugar tariffs and quotas), in which per-person benefits are large for small interest groups while per-person costs are small for large consumer groups.

The China Shock

A macroeconomic trade phenomenon highlighting that the U.S. comparative advantage lies in skilled labor, benefiting high-skilled domestic workers while displacing and harming less-skilled domestic labor.

Child Labor (Economic Perspective)

An economic challenge identified fundamentally as a poverty problem rather than a trade problem; trade restrictions worsen national poverty, whereas encouraging and supporting education provides effective relief.

Marginal Revenue ($MR$)

The incremental change in total revenue resulting from the sale of an additional unit of output ($MR = \frac{\Delta TR}{\Delta Q}$), which equals market price ($P$) for a price-taking firm.

Profit-Maximizing Output Rule

The foundational decision rule stating that a firm maximizes total economic profit ($\pi$) by producing the output level where marginal revenue equals marginal cost ($MR = MC$).

Geometry of Marginal Cost and Average Cost

The mathematical relationship where average cost ($AC$) declines whenever $MC < AC$, rises whenever $MC > AC$, and intersects the marginal cost ($MC$) curve precisely at minimum $AC$.

Economic Profit Equation

The formula used to determine a firm's total profit over a given output level: $\pi = (P - AC) \times Q$.

Short-Run Shutdown Decision

The operational choice where a firm will produce zero output ($Q = 0$) in the short run if the market price/marginal revenue falls below average cost ($MR = P_3$) such that operating generates unsustainable losses.

Market Supply Curve

The aggregate industry supply curve derived from the horizontal summation of individual firms' marginal cost curves ($Q_1 + Q_2 + Q_3$).

Constant Cost Industry

An industry with a horizontal long-run supply curve where entry and exit drive the market back to the zero-profit long-run equilibrium ($P = P_1$, $\pi = 0$) following shifts in market demand.