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How Firm Behave Under Perfect Competition In The Short And Long Run.

793 words - 3 pages

Perfect competition is a market structure characterized by a large number of buyers and sellers of essentially the same product. The firms produce a standardized product and there is a free entry and exit of these firms to and from the industry. The firm in a purely competitive market faces a perfectly elastic demand curve at the price determined by equilibrium in the market (Hirschey 379).The firm in a short-run supply curve is the short-run marginal cost curve above the minimum point on the average variable cost curve, also known as the shutdown point. In the short run, firms behave differently than in the long-run. It is important to remember that a profit-maximizing firm always produces where marginal cost is equal to marginal revenue. When a firm is small relative to the market, and its product is indistinguishable from the product of other firms, the firm views itself as having no influence on the market price. In perfect competition, if a firm wants to sell any of its output it must sell at the market price, which is referred to as a price taker.When a market is in equilibrium, the purely competitive firm can sell as much of the product as it wishes. From the firm's viewpoint, this means it faces a perfectly elastic demand curve. As demand increases, the firm will move up its marginal cost curve. Another increase in market demand would cause the firm to move further up its marginal cost curve. The higher price would lead it to supply more output. However, by doing this the firm is suffering a loss which means factors could earn more in some other use. The opportunity costs are not being met. However, since this is the short run, that means that some factors are fixed. The fixed factors represent the fixed costs and cannot be removed. Fixed costs must be paid in the short run even if the production ceases. We find that the firm will be covering its total variable costs and losing an amount equal to its total fixed costs. It must pay these fixed costs even if it decides to shut down. However, a firm is better off shutting down at this point and only incurring its fixed cost (Heath 825).Long-run adjustments to changes in market demand are dependent on the cost characteristics of the industry under consideration. Since entry is easy, firms will enter as long as profits are present. If all firms have the...

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