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EC120 Chapter 14: EC-120 Chapter 14

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bronzefrog950
1 Nov 2016
School
WLU
Department
Economics
Course
EC120
Professor
Ken Jackson

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Document Summary

Examine how competitive firms decide how much output to produce. Examine how competitive firms decide when to shut down production temporarily. Examine how competitive firms decide whether to exit or enter a market. See ho(cid:449) fi(cid:396)(cid:373) beha(cid:448)iou(cid:396) dete(cid:396)(cid:373)i(cid:374)es a (cid:373)a(cid:396)ket"s sho(cid:396)t-run and long-run supply curves. Goods offered by sellers are largely the same (homogeneous goods) Many buyers and sellers (no one can individually affect prices) Firms can enter or exit a market. Level of production maximizes the profit is the amount produced. If increasing quantity makes profit -> increase quantity. If reducing quantity generates more profit -> decrease quantity. Firm produces nothing, fixed costs with no revenue. In the long run all costs are variable. In the long run, if a firm produces nothing: profit=0. Assume identical firms (though not necessary in short-run) At any given price, add up quantity of supply of all firms. Long-run, entry and exit of firms is okay.

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Related Questions


1.
If firms in a monopolistically competitive market are earningpositive profits,
A) firms will likely be subject to regulation.
B) barriers to entry will be strengthened.
C) some firms must exit the market.
D) new firms will enter the market.
2.

Panel c in the set of figures shown is consistent with a firm in amonopolistically competitive market that is


A) earning profit and is in both short-run and long-runequilibrium.
B) earning economic profit and is in short-run equilibrium, but notlong-run equilibrium.
C) earning profit and is in long-run equilibrium, but not short-runequilibrium.
D) earning a negative profit and is not in equilibrium.
3.
When a profit-maximizing firm in a monopolistically competitivemarket is producing the long-run equilibrium quantity,
A) its marginal revenue will exceed its marginal cost.
B) its average revenue will equal its marginal cost.
C) it will be earning positive economic profits.
D) its demand curve will be tangent to its average-total-costcurve.
4.
Monopolistic competition differs from perfect competition becausein monopolistically competitive markets
A) each of the sellers offers a somewhat different product.
B) strategic interactions between firms is vitally important.
C) there are barriers to entry.
D) all firms can eventually earn economic profits.
5.
The free entry and exit of firms in a monopolistically competitivemarket guarantees that
A) economic losses can persist into the long run, but not economicprofits.
B) both economic profits and economic losses can persist into thelong run.
C) economic profits can persist into the long run, but not economiclosses.
D) both economic profits and economic losses disappear in the longrun.
6.


Panel (a) shows a profit-maximizing monopolistically competitivefirm that is

A) All answers are correct
B) earning a zero profit.
C) charging a price that is equal to average total cost.
D) in long-run equilibrium.
7.
Since a firm in a monopolistically competitive market faces a
A) perfectly elastic demand curve, it will always operate withexcess capacity.
B) downward-sloping demand curve, it will always operate atefficient scale.
C) perfectly inelastic demand curve, it will always operate atefficient scale.
D) downward-sloping demand curve, it will always operate withexcess capacity.
8.
In a monopolistically competitive market,
A) firms can enter or exit the market without restriction.
B) each firm takes the price of its product as given.
C) each firm produces a product that is essentially identical tothe products of other firms in the market.
D) there are only a few sellers.
9.
The fact that there is a great deal of advertising of men’s shavingproducts indicates that
A) it costs firms very little to produce those products.
B) the market for those products is perfectly competitive.
C) those products are highly differentiated.
D) All answers are correct
10.
A profit-maximizing firm in a monopolistically competitive marketdiffers from a firm in a perfectly competitive market because thefirm in the monopolistically competitive market
A) has no barriers to entry.
B) faces a downward-sloping demand curve for its product.
C) faces a horizontal demand curve at the market clearingprice.
D) is characterized by market share maximization.

11. When firms have an incentive to exit a competitive market, their exit will:

a. drive down market prices.

b. drive down the profits of existing firms in the market.

c. decrease the quantity of goods supplied in the market.

d. All of the above are correct.

 

12. If a perfectly competitive firm currently produces where the price is greater than the marginal cost, it:

a. will increase its profits by producing more.

b. will increase its profits by producing less.

c. is making positive economic profits.

d. is making negative economic profits.

 

13. Does a consumer well being vary along a demand curve?

a. Yes. When price increases, consumers move to a lower indifference curve.

b. Yes. When price increases, consumers move to a higher indifference curve.

c. No. When price increases, consumers stay on the same indifference curve.

d. No. When price increases, the higher price has no effect on budget constraints or indifference curves.

e. None of the above

 

14. If a competitive firm sets its output such that marginal revenue, marginal cost, and average total cost are equal, economic profit must be:

a. Negative

b. positive

c. Zero

d. Indeterminate from the given information

 

15. Which of the following is a characteristic of a perfectly competitive market?

a. Firms are price setters.

b. There are few sellers in the market.

c. Firms can exit and enter the market freely.

d. All of the above are correct.

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