Microeconomics Basics

Question: Elasticity in economics is:

Answer: Elasticity in economics is a measure of responsiveness. For example, the price elasticity of demand measures how responsive demand is to a change in the price level. Elasticity is used in many different formulas in economics to measure the responsiveness of certain variables to changes in others.

Question: Which of the following changes would most likely increase the price of music CDs?

Answer: Online music services are substitutes for music CDs. If their popularity decreases, the demand for music CDs will increase, resulting in an increase in the price of the CDs.

Question: The demand curve for cigarettes is steep because:

Answer: Cigarettes and similar addictive goods have inelastic (steep) demand curves. When the price changes, the quantity demanded does not vary much.

Question: According to British economist David Ricardo, the gains from international trade depend on:

Answer: Ricardo, often considered to be the father of modern trade theory, showed that comparative advantage, which is the ability to produce a good or service relatively more efficiently than your competitor, is the key thing that allows gains to be made from international trade by all parties involved.

Question: Which of the following is not a characteristic of a perfectly competitive industry?

Answer: In a perfectly competitive market, producers are price takers, they are not price setters. The price is determined entirely by the interaction of suppliers and demanders in the market.

Question: Which of the following would be an opportunity cost of going to college?

Answer: Opportunity cost refers to foregone earning in economics. An opportunity cost of going to college would be the four years of potential foregone earnings that could have been earned in the labor market, had the decision to go to college not been made.

Question: When the planting of a beautiful garden in one home increases the happiness of the neighbors who also have a view of the garden, the garden is said to create a...

Answer: In economics, a positive externality refers to the unintended benefit of an action. This happens often with public goods (such as parks, fountains, etc.) that create more value than intended.

Question: Which of the following industries is most prone to the occurrence of natural monopolies?

Answer: A natural monopoly occurs when an industry’s output can be produced at far lower cost by a single firm than by a number of smaller firms. Utility companies (such as electric, phone, cable) tend to turn into natural monopolies most easily. This is due to the nature of the business where a larger size gives the company a significant economic advantage.

Question: The invisible hand refers to:

Answer: Scottish economist and philosopher Adam Smith described the invisible hand in his infamous work The Wealth of Nations as the unintended social benefits that derive from individuals’ actions to enhance their self-interest. Smith argued that if markets are allowed to operate freely, the invisible hand will guide the society towards a most desirable outcome.

Question: Two points on the same indifference curve represent the same...

Answer: An indifference curve describes a certain level of utility. Points on the same indifference curve share the same utility level.