Unit 1: Markets are Efficient, Except . . . Intro to Microeconomics

Lesson 5b: Market Failures Continued: Positive Externalities and Public Goods

Key Problem

The Economic Effects of Positive Externalities

Click on the link above to learn how to do this problem.

Refer to the supply and demand graph below. Quantity A is the equilibrium quantity.

Quantity B represents the optimal (allocatively efficient) level of output.

This supply and demand graph represents that there is (are) ___________.

If the government decides to correct this externality with a subsidy to producers, then what happens to the graph, to the equilibrium level of output, and to allocative efficiency?

What else could the government do to correct for this externality?

 

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Lesson 5b