Microeconomics › Section H · Perfect competition › Topic H.1

Perfect competition and why it matters

Imagine a market with so many sellers of so identical a product that no one - buyer or seller - has any power over the price. Almost no market fully qualifies, yet the model is the course's measuring stick: it shows what competition at its purest achieves, and how far every real market sits from that.

In this topic

  • Four assumptions
  • Price takers
  • The firm's flat demand curve
  • Two demand curves, one market
  • Where reality falls short
  • Close approximations
  • Why the benchmark matters
  • Worked example: testing a market against the four assumptions
  • Worked example: one farm facing the wheat price
  • Common mistakes to avoid
  • Key takeaways

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