What is perfect competition?
In economic theory, perfect competition occurs when all companies sell identical products, market share does not influence price, companies are able to enter or exit without barriers, buyers have perfect or full information, and companies cannot determine prices.
Perfect competition is a theoretical market structure in which several conditions are met:
- There are many buyers and sellers in the market, and no single buyer or seller has any significant influence over the market price.
- The goods or services offered by all the firms in the market are identical or at least very similar.
- There are no barriers to entry or exit for firms in the market, so new firms can easily enter the market and existing firms can easily exit.
- All buyers and sellers have full information about the prices and qualities of goods and services in the market.
In a perfectly competitive market, firms are price takers and have to accept the market price, but they can sell as much as they want. The firms are also motivated by profit-maximizing and will set the quantity where marginal cost equals the marginal revenue.
It is important to note that perfect competition is a theoretical concept and that in the real world, markets may approximate but not fully meet these conditions.
Explain how price is determined under perfect competition
In a perfectly competitive market, there are many buyers and sellers, and no single buyer or seller has any significant influence over the market price. Prices are determined by the intersection of the supply and demand curves. As the price of a good increase, the quantity supplied by firms will also increase, but the quantity demanded by consumers will decrease.
Conversely, as the price of a good decrease, the quantity supplied by firms will decrease, but the quantity demanded by consumers will increase. The market price will settle at the point where the quantity supplied equals the quantity demanded, which is called the equilibrium price. At this price, firms are able to sell all of their output and consumers are able to buy all the goods they want.
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