Quiz: Understanding Microeconomic Market Dynamics — 9 perguntas

1. What happens to the market price when demand exceeds supply?

A. Prices become unpredictable

B. Prices remain unchanged

C. Prices tend to fall

D. Prices tend to rise

Answer: (D)

Explicação

When demand exceeds supply, there is upward pressure on prices because consumers compete to buy the limited goods, leading to a rise in market prices.

2. What does a PED greater than 1 indicate about the demand for a good?

A. Demand is elastic, meaning small price changes lead to large variations in quantity demanded.

B. Demand is inelastic, meaning quantity demanded is unresponsive to price.

C. Demand is perfectly inelastic, with quantity demanded remaining constant regardless of price.

D. Demand is perfectly elastic, where quantity demanded drops to zero if the price changes.

Answer: (A)

Explicação

A PED greater than 1 indicates elastic demand, where consumers are highly responsive to price changes. The other options describe inelastic, perfectly inelastic, and perfectly elastic cases, which are characterized by different PED values.

3. If the price elasticity of demand (PED) for a product is greater than 1, what does this indicate?

A. Demand is elastic

B. Demand is perfectly inelastic

C. Demand is unitary elastic

D. Demand is inelastic

Answer: (A)

Explicação

A PED greater than 1 indicates elastic demand, meaning that the quantity demanded responds proportionally more than the price change, so consumers are highly responsive to price changes.

4. Which of the following best describes a normal good?

A. Demand for the good increases as consumer income rises.

B. Demand for the good decreases as consumer income rises.

C. Demand is unaffected by changes in consumer income.

D. Demand decreases when prices decrease.

Answer: (A)

Explicação

Normal goods have demand that increases as consumer income increases, reflecting a positive income elasticity. The other options describe inferior goods, demand invariance, and the effect of price, which are unrelated to normal goods' income response.

5. How does an increase in consumer income typically affect the demand for inferior goods?

A. Demand becomes unpredictable

B. Demand decreases

C. Demand increases

D. Demand remains unchanged

Answer: (B)

Explicação

For inferior goods, demand decreases as consumer income increases because consumers tend to buy less of these lower-quality alternatives when they have higher income.

6. At market equilibrium, what is the relationship between demand and supply?

A. Demand equals supply, balancing the market.

B. Demand exceeds supply, causing shortages.

C. Supply exceeds demand, causing surpluses.

D. Demand is less than supply, but the market still clears.

Answer: (A)

Explicação

Market equilibrium occurs where demand equals supply, meaning the quantity consumers want to buy matches what producers are willing to sell. Excess demand or supply indicates disequilibrium.

7. Who was a renowned economist known for formalizing the concept of elasticity in the early 20th century?

A. Alfred Marshall, who contributed heavily to utility and demand theory around the 1890s.

B. Adam Smith, who is famous for classical economics and 'The Wealth of Nations' in 1776.

C. John Maynard Keynes, known for his work on macroeconomics in the 1930s.

D. Milton Friedman, a key figure in monetarism during the mid-20th century.

Answer: (A)

Explicação

Alfred Marshall was instrumental in developing the concept of price elasticity of demand in the late 19th century, making the first formal analysis of how quantity demanded responds to price changes. The other economists contributed significantly to economics, but not specifically to elasticity theory.

8. Which of the following would most likely cause a demand curve to shift to the right?

A. An advertising campaign that successfully increases consumer awareness of a product.

B. An increase in the price of the good.

C. A decrease in consumers' income for inferior goods.

D. A government tax on the good, raising prices.

Answer: (A)

Explicação

Advertising can increase demand by making consumers more aware and interested, shifting the demand curve outward. The other options either cause movement along the demand curve or decrease demand.

9. What does a perfectly inelastic demand imply about consumers' responsiveness to price changes?

A. Quantity demanded remains constant regardless of price changes.

B. Quantity demanded is highly responsive to price changes, with large variations.

C. Quantity demanded drops to zero if price increases.

D. Quantity demanded becomes infinite when price changes.

Answer: (A)

Explicação

Perfectly inelastic demand means consumers will buy the same quantity regardless of price, indicated by PED = 0. The other options describe elastic or perfectly elastic demand scenarios.