Government Intervention in Externalities

The video tutorial covers the concept of externalities in economics, focusing on both negative and positive externalities. It explains how negative externalities result in external costs and how governments can impose corrective taxes to address them. Conversely, positive externalities lead to external benefits, and governments can provide subsidies to encourage such activities. The tutorial uses graphs to illustrate these concepts and provides practice questions to reinforce understanding.

What does the private cost curve represent in the context of externalities?

• The social cost curve

• The supply curve

• The demand curve

• The external benefit curve

How is the external cost determined in a graph with negative externalities?

• By the horizontal distance between demand and supply curves

• By the slope of the demand curve

• By the vertical distance between social cost and private cost curves

• By the intersection of demand and social cost curves

What action can the government take to address negative externalities?

• Decrease supply

• Increase demand

• Impose corrective taxes

• Provide subsidies

How is the tax revenue calculated when a corrective tax is imposed?

• By multiplying the tax rate by the total cost

• By multiplying the tax rate by the quantity produced

• By adding the tax rate to the social cost

• By subtracting the tax rate from the private cost

In the context of positive externalities, what does the social value curve represent?

• The demand curve

• The combined private and external value

• The external cost

• The private cost

What is the primary difference between the graphs of negative and positive externalities?

• Positive externalities have two supply curves

• Negative externalities have two demand curves

• Positive externalities have two demand curves

• Negative externalities have two supply curves

How can the government encourage production in markets with positive externalities?

• By increasing supply

• By imposing taxes

• By providing subsidies

• By reducing demand

What is the ideal subsidy amount in a market with positive externalities?

• Equal to the social cost

• Equal to the private cost

• Equal to the demand curve slope

• Equal to the external benefit

What is the social optimum quantity of output in the context of positive externalities?

• 73 units

• 150 units

• 100 units

• 50 units

Why is the market equilibrium not sufficient in the presence of positive externalities?

• It causes a surplus

• It results in higher prices

• It does not account for external benefits

• It leads to overproduction