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ECON 1B03 Lecture Notes - Lecture 32: Monopolistic Competition, Demand Curve, Perfect Competition

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ochreelephant179
25 Nov 2018
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

Each firm"s product is at least slightly different from another. So, each firm faces a downward sloping demand curve, like a monopolist. Free entry and exit (no barriers to entry) Firms are price setters to some degree. Monopolistically competitive firm will maximize profits when it produces where its mc = Mr and charge a price based on demand (just like a monopoly) In sr, monopolistically competitive firm behaves just like a monopolist. Sr economic profits encourage new firms to enter market. Reduces demand faced by firms already in market. Existing firms" demand curves decrease/shift to left. Demand for existing firms" products fall, and profits decline. Sr economic losses encourage firms to exit market. Shifts remaining firms" demand curves to right. If there are +ve profits/losses, firms will enter/exit until firms are making exactly 0 economic profits, just like perfect competition. Firms make 0 economic profit when p = atc. However, 0 profit looks different than it does for perfect competition.

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Related Questions

1) A natural monopoly exists when:

a. A few firms collude to make one large firm

b. Firms enter the industry as a result of profit incentives

c. Economies of scale provide large cost advantages to having one firm produce the industry's output

d. Firms naturally maximize regardless of market structure

 

2) A(n) ____ is a single firm with ___, whereas a(n) ___ implies an industry with ____ firm(s) and ____ .

a. Monopoly; barriers to entry; oligopoly; few; no barriers to entry

b. Oligopoly; no barriers to entry; monopoly; many; easy entry and exit

c. Monopoly; barriers to entry; monopolistic competition; many; easy entry and exit

d. Monopolistic competitor; barriers to entry; monopoly; one; barriers to entry

 

3) In monopolistic competition:

a. Each firm produces a product identical to that of every other firm in the industry

b. Firms are aware of their strategic interdependence

c. Firms earn large economic profits in the long run

d. Firms earn zero economic profits in the long run

 

4) A monopolistically competitive industry, such as corn snack chips, and a perfectly competitive industry, like wheat farming, are alike in that:

a. There are many firms in each industry

b. Firms in both types of industries produce similar but not identical products

c. Barriers to entry in both industries are large

d. Firms in both types of industries produce identical products


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.

Homework help and study guide help, all multiple choice

A monopolist:

A) can sell as much as it wants at the chosen price because it is the only seller.

B) can increase the price only if it is willing to decrease the quantity sold.

C) can increase the price and the quantity sold at the same time.

D) is not restricted by the law of demand.

A monopolistically competitive firm:

A) produces where marginal revenue equals marginal cost and charges the price consumers are willing to pay as given by the demand curve.

B) produces where marginal cost equals average total cost and charges the price consumers are willing to pay as given by the demand curve.

C) chooses price and quantity based on where the marginal cost curve meets the demand curve.

D) chooses price and quantity based on where the average total cost curve meets the demand curve.

21) Oligopoly is A) like a monopoly because there are barriers to entry. B) like perfect competition because oligopoly firms all sell homogeneous goods. C) like monopolistic competition because oligopoly firms all sell differentiated goods D) like perfect competition because there are many firms in the industry
ECON 1102 (Microeconomics) Test 4 (043015)


In ________ market structure, a firm's output depends ________.

A) an oligopoly; only on its own marginal revenue and marginal cost curves

B) a monopolistically competitive; in part on its competitors' price and quantity decisions

C) an oligopoly; in part on its competitors' price and quantity decisions

D) a monopolistically competitive; only on its marginal revenue curve