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Long-Run Equilibrium in Perfectly Competitive Markets

帮考网校2020-08-06 13:38:52

In a perfectly competitive market, long-run equilibrium occurs when the market is in a state of balance, where the quantity of goods supplied is equal to the quantity of goods demanded at a price that is equal to the minimum average total cost of production. This state of equilibrium is achieved through the free movement of resources, and the absence of any barriers to entry or exit from the market.

In the long run, firms in a perfectly competitive market will adjust their production levels to maximize profits. If a firm is earning positive economic profits, new firms will enter the market, increasing the supply of goods and driving down prices. Conversely, if a firm is earning negative economic profits, some firms will exit the market, reducing the supply of goods and driving up prices.

As more firms enter the market, the supply curve shifts to the right, causing the price to fall. This process continues until the price falls to the minimum average total cost of production, at which point economic profits are zero. At this point, firms are earning only normal profits, which is the minimum amount necessary to keep them in business.

In the long run, the market will reach a state of equilibrium where the quantity of goods supplied is equal to the quantity of goods demanded at a price that is equal to the minimum average total cost of production. At this point, there is no incentive for firms to enter or exit the market, and all firms are earning normal profits. This state of equilibrium is efficient because it ensures that resources are being used in the most productive way possible, and that consumers are getting the goods they want at the lowest possible price.

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Long-Run Equilibrium in Perfectly Competitive Markets

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