ECON 1010 Chapter Notes - Chapter 12: Perfect Competition

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coffeemarten199

19 Mar 2016

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The goal of a perfectly compeiive irms is to maximum economic proit, given the constraint the company will face. The (inish note ) (econ proit tr-tc (tc includes both explicit and implicit costs) Avc= mr= mc shut down point ask why (point t) A perfectly compeiive irms supply curve shows how the irm"s proit-maximizing. A shurt run supply curve of a company starts at point t and whenever mr mc that"s another point of the supply curve look at examples in text book. Firms will enter long run as long as they are making economic proit. In long run market price will fall unil irms are making zero economic proit. When mc= atc = mr is zero economic proit. Look carefully at chapter 12 and 11 not quite understanding the graphs especially. In these situaions mc = supply curve. External economies are factors beyond the control of an individual irm that lower the irms cost as the industry output increases.

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DISCUSSION QUESTION PART 1: Explain, in your own words, why profit maximization happens at the point where MR = MC, and not where MR is greater than MC. Refer to Figure 7.2. in the textbook. Should the 4th unit of output be sold? What about the 5th unit, 6th unit, 7th unit, 8th unit, 9th, or 10th unit? Use your understanding of MR = MC rule to explain.

DISCUSSION QUESTION PART 2: If you are the manager of a perfectly competitive firm that is making a loss (TR < TC), would you decide to shut it down? Under what circumstances would you decide to operate an unprofitable business?

6. Power Printers Total Costs (per hour)

q TC

0 65

1 80

2 95

3 120

4 150

5 200

If the price of a printer is $50 in this perfectly competitive industry, what is the profit-maximizing rate of output?

7. Which of the following is NOT true in a perfectly competitive market?

a. There is free entry and exit into the industry.

b. Each firm produces a differentiated product.

c. Each firm faces a perfectly elastic demand curve.

d. Price is equal to marginal revenue at every output level for the firm.

8. A perfectly competitive firm should always continue to operate in the short run as long as:

a. P < ATC at the rate of output where MR = MC.

b. P < AVC at the rate of output where MR = MC.

c. MR > AVC at the rate of output where MR = MC.

d. MR > AFC at the rate of output where MR = MC.

9. A firm that makes zero economic profits:

a. Must eventually go bankrupt.

b. Should shut down.

c. Incurs a loss, but should not shut down.

d. Covers all its costs, including a provision for normal profit.

10. A monopoly firm is different from a competitive firm in that:

A. There are many substitutes for the monopolistâs product whereas the competitive firmâs demand curve is perfectly elastic.

B. The monopolistâs demand curve is perfectly inelastic, whereas the competitive firmâs demand curve is perfectly elastic.

C. The monopolist can influence the price in the market, whereas the competitive firm is a price taker.

D. All of the above

taupewombat30

A. A competitive firm

can consider only its location in setting the price.
must base its competitive price on product differentiation.
has the ability to set its own price.
must accept the price determined by the intersection of the market supply and demand curves.
has no supply curve.

B. If a firm is making an economic profit, then

the factors of production are being paid their opportunity costs.
there will be no change in the number of firms if the industry is perfectly competitive.
the factors of production are being paid less than their opportunity costs.
the factors of production are being paid more than their opportunity costs.
the firm will exit the industry

C. Along a downward-sloping monopoly demand curve,

marginal revenue is greater than price.
the elasticity of demand is constant.
marginal revenue decreases when the price decreases.
marginal revenue is equal to zero when the price is equal to zero

D. If, in the short run, a perfectly competitive firm is producing at a point where the total cost is greater than total revenue, then the firm should

shut down because economic profits are negative.
continue to produce as long as P > AVC.
continue to produce because accounting profits are positive.
set a higher price for its output.
set a lower price for its output

E. For a perfectly competitive firm, the demand curve is

the marginal revenue curve.
perfectly inelastic.
always equal to marginal cost.
the same as the market demand curve

F. A firm in a(n) industry will have the most elastic demand curve

monopolistic
oligopolistic
monopolistically competitive
perfectly competitive

G. If the demand curve of a monopolist is in the inelastic range, then

total revenue will fall if the price increases.
total revenue will be unchanged if the price increases.
total revenue will rise if the price increases.
the total supply will increase by an equal amount if demand increases.
the price will be unchanged if total revenue increases

H. Monopolistic competition and oligopoly are examples of

monopoly.
perfect competition.
theories of consumer behavior.
imperfect competition.
the extreme cases on the market structure continuum

I. Under which market structure do firms face the flattest (most elastic) demand curve?

perfect competition
monopolistic competition
oligopoly
monopoly

J. At the point of long-run equilibrium for a perfectly competitive firm,

economic profits are zero.
TR > TC.
TR < TC.
P = AVC.
normal profits are zero.

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ECON 1010 Chapter Notes - Chapter 12: Perfect Competition

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