All AP Microeconomics Resources
Example Questions
Example Question #42 : Competition
Assume the firm operates in the short-run. Use the following chart for questions 1-5:
Units |
Total Revenue |
Total cost |
0 |
0 |
15 |
1 |
11 |
18 |
2 |
20 |
23 |
3 |
27 |
30 |
4 |
32 |
39 |
5 |
36 |
50 |
6 |
39 |
62 |
7 |
39 |
75 |
Given the trend of total revenue schedule, which of the following statements best describes the behavior of the total revenue curve for this firm:
The total revenue curve will initially increase, become flat, then increase
The total revenue curve will always increase but at a decreasing rate
The total revenue curve will increase indefinitely and constantly
The total revenue curve will increase initially, become flat, then decrease
Cannot tell the shape of the total revenue curve
The total revenue curve will increase initially, become flat, then decrease
The schedule shows that the marginal revenue is positive, but decreasing. As long as marginal revenue is greater than zero (MR>0) the total revenue will increase. When marginal revenue becomes zero (MR=0), total revenue will remain constant. When margina, revenue becomes less than zero (MR<0), total revenue will decrease. Diminishing returns, as well as the total revenue schedule, shows a continuous decrease of MR. We would expect, then, that TR would increase, become flat, then decrease.
Example Question #43 : Competition
Assume the firm operates in the short-run. Use the following chart for questions 1-5:
Units |
Total Revenue |
Total cost |
0 |
0 |
15 |
1 |
11 |
18 |
2 |
20 |
23 |
3 |
27 |
30 |
4 |
32 |
39 |
5 |
36 |
50 |
6 |
39 |
62 |
7 |
39 |
75 |
Suppose market factors have caused the firm to become the only supplier of widgets in the area, effectively giving the firm monopoly power. The most likely effect of this would be:
- The price of the good would rise
- The monopoly would price the good equal to marginal cost
- The quantity of the good would rise.
2 only
1, 2, and 3
1 and 2
3 only
1 only
1 only
The monopolist would produce at the point where MR = MC. However, price is now derived from the consumer demand curve rather than being equal to MC. This is because a monopolist’s marginal revenue curve is steeper than the consumer demand curve. The resulting intersection causes monopolists to product a lower quantity of goods at a higher price. This price would exceed the marginal cost of production, allowing the monopolist to generate economic profit.
Example Question #41 : Perfectly Competitive Markets
Suppose that the market for oranges exists at equilibrium such that the price of oranges is $3 and the quantity of oranges is 5. Orange growers lobby the government to impose a price floor of $5. Which of the following effects would occur?
There would be a shortage of oranges
Producer surplus would decrease
Dead weight loss would decrease
Consumer surplus would increase
There would be a surplus of oranges
There would be a surplus of oranges
If the government imposes a price floor above the equilibrium price, the quantity of goods supplied would exceed the quantity of goods demanded (Qs > Qd) leading to a surplus. Consumer surplus would decrease and producer surplus would increase. We would also generate a dead weight loss (DWL) whereas before there was none, so DWL increases.
Example Question #42 : Perfectly Competitive Markets
Assume a market exists for Plobs, Clobs and Globs. When the price of Plobs increases, the price of Clobs increases. When the price of Plobs increases, the price of Globs decreases. Which of the following statements would support this behavior?
Plobs and Clobs are substitutes
The demand for Plobs is inelastic
Plobs and Clobs are complements
Plobs and Globs are complements
Clobs and Globs and complements
Plobs and Clobs are complements
f the price of Plobs increases and the price of Clobs increase, they must be complements. If the price of Plobs increases and the price of Globs decreases, they must be substitutes. We are not told anything about relative changes in quantity given a change in price, so we cannot determine elasticity. Clobs and Globs are not given a definitive relationship.
Example Question #43 : Perfectly Competitive Markets
Which of the following would NOT cause a shift in the demand curve for corn?
The price of wheat declines
Consumers anticipate a rise in the price of corn
The economy enters a growth phase and consumer incomes increase
A new widely read study shows that corn is healthy and should be incorporated into everyone’s diet.
The cost of fertilizer increases
The cost of fertilizer increases
The rise in the cost of fertilizer represents a change in input prices, which is a determinant of supply, not demand. All other options represent determinants for demand.
Example Question #44 : Perfectly Competitive Markets
The economy experiences slow growth and average incomes in the US decreases by 10%. As a result, the demand for widgets increases by 5%. Widgets are a:
Necessary good
Inferior good
Bad
Luxury good
Normal good
Inferior good
If demand for widgets increases when incomes decrease, then the income elasticity for widgets is negative. This is because income elasticity is E = percent change in quantity/percent change in income. If E < 0 then the good is inferior.
Example Question #45 : Perfectly Competitive Markets
If the increase in the price of a good increases the demand for another good, then the two goods are:
giffen goods
luxury goods
normal goods
complementary goods
substitute goods
substitute goods
Complementary goods typically replace one another in consumption. Thus, a decrease in demand for one good will typically increase the demand of the other good.
The question states that the price of one of the goods increased, which would lead to a decrease in its demand. If the demand of the other good increases as a result, than the two goods are likely to be substitute goods.
Example Question #46 : Perfectly Competitive Markets
Which of the following is a private good?
a beach
clean air
fish in the ocean
a candy bar
a movie theatre
a candy bar
A private good is rival, which means that a person's consumption affects another person's consumption of the good, and excludable, which means that a person can prevent another person from consuming the good. Among the choices here, the only one that meets both criteria is the candy bar, which is both rival and excludable.
Example Question #47 : Perfectly Competitive Markets
Sales tax is commonly labeled by economists as:
Proportional tax
Progressive tax
Regressive tax
None of the other answers
Excise tax
Regressive tax
In terms of individual income and wealth, sales tax imposes a greater burden on the poor than the rich. One's consumption of taxable items typically does not increase as fast as one's income. Thus, lower-income individuals spend a larger portion of their income and wealth than higher-income individuals.
Example Question #71 : Ap Microeconomics
From the point of view of economic efficiency, monopolists:
Produce too much of a good and charge too low of a price.
Produce the optimal amount of a good and charge the optimal price.
Produce too much of a good and charge too high of a price.
Produce too little of a good and charge too low of a price.
Produce too little of a good and charge too high of a price.
Produce too little of a good and charge too high of a price.
When not restricted by government or laws, monopolists will typically try to maximize their profit by producing fewer goods and selling them at higher prices than would be the case in a perfectly competitive market. The lack of competition allows them to charge higher prices without the threat of a competing firm driving down prices.
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