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Understanding Economics
Understanding Economics: A Contemporary Perspective, 2/e
Mark Lovewell, Ryerson Polytechnic University

Competitive Dynamics and Government

Quick Quiz



1

Demand is elastic if:
A)a 10 percent drop in price causes a 20 percent rise in quantity demanded.
B)a 20 percent increase in price causes a 10 percent fall in quantity demanded.
C)a 15 percent increase in price causes quantity demanded to fall by the same percentage.
D)a rise in price leads to an increase in total revenue.
E)a decline in price leaves total revenue unaffected.
2

When demand is perfectly inelastic
A)suppliers in the market are price-takers.
B)the demand curve is vertical.
C)the demand curve is horizontal.
D)total revenue in this market is always constant.
E)price is always constant.
3

Which of the following statements is true?
A)If demand is inelastic, then an increase in price causes a drop in total revenue.
B)When demand is elastic, a fall in price causes total revenue to be reduced.
C)A unit-elastic demand curve means that total revenue is constant.
D)If demand is perfectly inelastic, a rise in price causes total revenue to fall.
E)A perfectly elastic demand curve means that total revenue is constant.
4

Which of the following products is most likely to have an inelastic demand?
A)a product with few close substitutes
B)a product with many close substitutes
C)a product that makes up a large portion of consumers' incomes
D)a luxury
E)a complementary product
5

Which of the following products is most likely to have an elastic demand?
A)a pack of chewing gum
B)a type of medical vaccine
C)a home entertainment centre
D)drinking water
E)none of the above
6

The value of the price elasticity of demand is:
A)equal to 1 when demand is unit-elastic.
B)greater than 1 when demand is inelastic.
C)always positive.
D)between 0 and 1 when demand is elastic.
E)equal to 0 when demand is perfectly elastic.
7

A rise in good's price from $5 to $7 causes quantity demanded for that good to decline from 5000 to 3000 units. This means the value of the price elasticity of demand is:
A)(-)1
B)(-)0.67
C)(-)1.5
D)(-)0.4
E)none of the above
8

If a market has a perfectly elastic supply curve, then:
A)the supply curve is horizontal.
B)an increase in demand raises equilibrium price, but keeps equilibrium quantity unchanged.
C)both equilibrium price and equilibrium quantity remain unchanged if demand increases.
D)the supply curve is upward-sloping.
E)the supply curve is downward-sloping.
9

In the immediate run:
A)the demand curve is horizontal.
B)supply is either elastic or inelastic.
C)supply is perfectly inelastic.
D)demand is perfectly inelastic.
E)supply is perfectly elastic.
10

In an increasing-cost industry:
A)the long-run supply curve is vertical.
B)new units of the product can be produced in the long run only at gradually higher prices.
C)changes in the quantity of output have no effect on resource prices.
D)price is always constant.
E)quantity supplied is always constant.
11

An increase in the price of an item from $400 to $800 leads to a rise in the item's quantity supplied from 200,000 to 300,000 units. The value of the price elasticity of supply is therefore:
A)2.0
B)1.67
C)0.5
D)1.0
E)0.6
12

Which of the following is not a likely result of a government agricultural price support program?
A)Consumers are harmed, because they must pay a higher price than without the program.
B)Farmers are helped, since they are able to produce more output and receive a higher price than without the program.
C)A government agency must purchase the surplus in the market.
D)Society as a whole benefits from the program because more of the good is produced.
E)Taxpayers are hurt, due to the tax revenues that must be spent on the program.
13

A price ceiling:
A)creates a shortage.
B)is effective only when the ceiling price is below the equilibrium price.
C)is illustrated by the case of rent controls.
D)is harmful to producers in the affected market.
E)all of the above
14

If a spillover cost exists in a perfectly competitive market:
A)a government subsidy will help to correct the oversupply of the product in this market.
B)a government subsidy will help to correct the undersupply of the product in this market.
C)a tax will help to correct the oversupply of the product in this market.
D)a tax will help to correct the undersupply of the product in this market.
E)neither a tax nor a subsidy is necessary in this market.
15

The presence of a spillover benefit in a perfectly competitive market means:
A)that too few units of the product will be produced without some form of government intervention.
B)that too many units of the product will be produced without some form of government intervention.
C)that there must be a spillover cost in the market as well.
D)that either too many or too few units of the product will be produced without some form of government intervention.
E)that the right number of units will be produced even without government intervention.
16

A public good:
A)has significant spillover costs.
B)has benefits that cannot be restricted to those willing to pay for it.
C)is the same as a private good in capitalist economies.
D)has costs that cannot be restricted to certain individuals.
E)is the same as a private good in socialist economies.
17

The consumer surplus for a market:
A)applies only if consumers' marginal benefits are less than the price paid.
B)is found by subtracting consumers' total expenditure from their total benefit in a particular market.
C)is measured in imaginary "(utils"( rather than in monetary terms.
D)is found by subtracting consumers' total benefit from their total expenditure in a particular market.
E)is found by adding consumers' total benefit and their total expenditure in a particular market.
18

Canada's transfer payment programs are criticized because:
A)these programs are not effective in eliminating poverty.
B)some of these programs are inequitable, because low-income Canadians do not get the major benefit.
C)some of these programs are open to abuse.
D)some of these programs discourage work.
E)all of the above




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