ECON 2005 Lecture Notes - Lecture 10: Average Variable Cost, Economic Equilibrium, Competitive Equilibrium

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beigecoyote97

31 Jan 2019

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An industry structure where there are many small producers and consumers competing against one another. Firms can change output without affecting the price. All firms selling the same homogenous product. Consumers all know the fair price that a product should be sold for. Unrestricted entry and exit to the market. Prices not fixed or regulated by state. Profit = total revenue - total cost. The lowest point on average variable cost curve. If it dips below, best option is to shut down. The sum of the marginal cost curves (above avc) of all the firms in an. Firms can not survive with less than zero economic profit. Eventually, price becomes the same as marginal and average cost. If a firm is earning negative profit in the short run, it will shut down in the long run. If a firm in an industry earns positive economic profits, other firms will enter this industry and existing firms will expand.

Related Questions

Match the following.

constant-cost industry	A market structure in which a large number of firms sell a homogenous product or service with no restrictions on entry or exit and each firm is a price-taker.
increasing-cost industry	The demand facing a price-taking firm.
long-run equilibrium	A firm produces zero output but must still pay its fixed costs.
marginal revenue product	Price below which a firm shuts down in the short run.
perfect competition	All firms produce where price equals long-run marginal cost, and economic profits are zero.
perfectly elastic demand	Industry in which input prices rise as all firms in the industry expand output.
shut down	Industry in which input prices remain constant as all firms in the industry expand output.
the shut-down price	The additional revenue earned by hiring one more unit of a variable input.

viridianhare336

Which of the following is not necessarily a characteristic of perfect competition? (Points: 1)

low prices
a large number of buyers and sellers
a homogeneous product
perfect information

2. In the short run, a perfectly competitive ball bearing manufacturer will continue to produce at a loss if (Points :1)
it is covering all of its variable cost plus part of its fixed cost

it is covering all of its fixed cost
variable cost is less than the fixed cost
fixed cost is zero

3. The golden rule of profit maximization states that any firm maximizes profit by producing where (Points :
marginal revenue equals marginal cost
demand is unit elastic, and total revenue is the greatest
price equals marginal revenue
price equals marginal cost

4. Which of the characteristics of perfect competition assures that economic profit will be zero in the long run? (Points: 1)
There are easy entry and exit in the market.
Each firm is a price taker.
Each firm has access to perfect information.
Each firm is small relative to the market.

5. A constant-cost industry is distinguished by the fact that(Points: 1)
firms' short-run average total costs are horizontal
firms' short-run marginal cost curves are horizontal
the long-run industry supply curve is perfectly elastic
the short-run industry supply curve is perfectly elastic

6. Commodity products are (Points: 1)
pasteurized
bland
perceived by consumers to be identical
made by one manufacturer

7. In a perfectly competitive industry we are likely to find(Points: 1)
firms producing a wide variety of products
barriers to entry
no profit possible in the short run
firms that do not advertise

8. Perfectly competitive firms are price takers because (Points :1)
all small firms must take the price set by the largest firm in the market
firms take the price that government determines is a "fair" price
each firm is small and goods are perfect substitutes for one another
free entry and exit in the short run creates a constant market price in the long run

9. In perfect competition, if one firm raises its price, (Points :1)
others will follow
that firm will increase its revenues
that firm will lose revenues because other firms will not follow
all consumers will be adversely affected

10. Suppose, at its present rate of output, a perfectly competitive firm's marginal revenue exceeds both its marginal cost and its average variable cost. To maximize profit, the firm should (Points: 1)
lower the price
raise the price
increase output
reduce output

tanpig844

34. All firms in an industry have the same costs. Assume that all other firms in the industry are in short-run equilibrium. However, at the current level of output of one particular firm, AC-MC>P-MR>AVC. If nothing changes, this firm should: (A) decrease its output. (B) increase its output. (C) keep output constant. (D) shut down in the short run. ((E) decrease output in the short run and shut down in the long run. (F) increase output in the short run and shut down in the long run. (G) adjust output until Total Revenue = Total Cost. (H) produce where the marginal cost curve just cuts the demand curve in the short and long run. (1) none of the above.

ECON 2005 Lecture Notes - Lecture 10: Average Variable Cost, Economic Equilibrium, Competitive Equilibrium

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