Public Goods Examples: National Defense, Streetlights, and More

📚 Quick Study Guide

• 🌍 Definition: Public goods are non-excludable (everyone benefits, even if they don't pay) and non-rivalrous (one person's use doesn't diminish its availability to others).
• 🛡️ National Defense: Protects everyone within a nation's borders, regardless of their contribution.
• 💡 Streetlights: Provide illumination to all pedestrians and drivers in an area.
• 🏞️ Clean Air: Everyone benefits from cleaner air, and one person's enjoyment of it doesn't reduce its availability for others.
• 💰 Free Rider Problem: Individuals may not contribute to public goods, hoping to benefit without paying, which can lead to under-provision.
• ⚖️ Government Provision: Governments often provide public goods because the market fails to do so efficiently.

Practice Quiz

1. Which of the following is the BEST example of a public good?
   1. A) A slice of pizza
   2. B) A private swimming pool
   3. C) National defense
   4. D) A concert ticket
2. What does 'non-excludable' mean in the context of public goods?
   1. A) It is impossible to prevent people from using the good.
   2. B) The good is very expensive.
   3. C) Only certain people are allowed to use the good.
   4. D) The good is only available during certain hours.
3. What is the 'free rider problem' associated with public goods?
   1. A) People pay too much for the good.
   2. B) People benefit from the good without contributing to its cost.
   3. C) The good is over-produced.
   4. D) The good is only available to government employees.
4. Which characteristic distinguishes a public good from a private good?
   1. A) Public goods are always more expensive.
   2. B) Public goods are non-rivalrous and non-excludable.
   3. C) Public goods are only available in cities.
   4. D) Private goods are provided by the government.
5. Streetlights are a good example of a public good because...
   1. A) They are owned by private companies.
   2. B) They are excludable and rivalrous.
   3. C) They are non-excludable and non-rivalrous.
   4. D) They are only used by cars.
6. Why do governments typically provide public goods?
   1. A) Because they are always cheaper to produce.
   2. B) Because the market often fails to provide them efficiently.
   3. C) Because private companies are not allowed to provide them.
   4. D) Because they are always profitable.
7. Which of the following is NOT a typical example of a public good?
   1. A) National defense
   2. B) A public park
   3. C) A toll road
   4. D) Clean air