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ECON 1B03 Lecture Notes - Lecture 45: Monopolistic Competition, Perfect Competition, Externality

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lilaccrab82
29 Aug 2016
School
McMaster University
Department
Economics
Course
ECON 1B03
Professor
Hannah Holmes

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ECON 1B03 Full Course Notes
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ECON 1B03 Full Course Notes
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Document Summary

Sr economic profits encourage new firms to enter the market. Decreases demand faced by firms already in the market. Sr economic losses encourage firms to exit the market. Shift"s the remaining firm"s demand to the right. If there are positive profits or losses, firms will enter or exit until the firms are making exactly zero economic profits like perfect competition: zero economic profits: p = atc. Two characteristics of monopolistic competition: as in a monopoly. Mr < p since d is downward sloping: as in a competitive market. Free entry/exit, drive economic profit to zero: once difference is amount of q produced in lr. Monopolistically competitive firms will produce at excess capacity. Produce a level of output q where atc is above min atc, unlike perfectly competitive firms. Provides info, price competition, allows new firms to enter an industry, signals high quality items: critics say.

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Related Questions

1a. Compare the characteristics of monopoly, oligopoly, and monopolistic competition. 

1b. Compare the demand curves for Monopoly (M), Oligopoly (O), and Monopolistic Competition (MC) in terms of their steepness and elasticity. What about their characteristics might make cause this to occur? 

1c. Firms experience losses, normal profits, and economic profits. Explain why M and O tend to experience economic profits in the long run. 

1d. Explain why MC can experience economic profits in the short run but not the long run. 

1e. Compare MC and pure competition in terms of normal profits in the long run. Why must this occur? (10)

 


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.

13. If a monopolistic competitor is producing an output for which marginal revenue is $40 and the marginal cost is $32, to maximize profits the firm should
A. decrease the level of output.
B. keep the level of output constant.
C. continue to make $8 per unit.
D. increase the level of output.

14. A monopolistic competitor will not make an economic profit unless
A. it engages in price discrimination.
B. its marginal revenue is greater than its marginal cost.
C. it faces an inelastic demand curve.
D. its price is greater than its average total cost.

15. The definition of monopolistic competition includes
A. few firms and ease of entry and exit.
B. few firms and barriers to entry and exit.
C. many firms and barriers to entry and exit.
D. many firms and ease of entry and exit.

16. Characteristics of monopolistic competition include all of the following except
A. significant barriers to entry.
B. a relatively large number of sellers and buyers.
C. small market share for each seller.
D. differentiated products.