What is the difference between public goods and externalities?

Public goods are non-excludable and non-rival - i.e. you cannot be stopped from consuming the good and this does not affect others' consumption
Externalities are benefits/costs to a third party outside the market transaction
A public good such as knowledge could have positive externalities, but they are not the same thing

NS

Related Economics A Level answers

All answers ▸

Explain why an increase in labour productivity is likely to reduce the deficit on the current account of the balance of payments.


Please outline the fundamental Kalam and evaluate its weaknesses


The UK government are planning on imposing a tax on sugary drinks. Discuss how a tax could be used to decrease consumption of sugary drinks and outline some potential issues.


How would a change in income affect the quantity demanded of an inferior good?