Profit Maximization Under Perfect Competition in the Long Run
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Questions and Answers

What point do perfectly competitive firms produce at in the long run?

  • P=AC minimum
  • P=MR
  • P=ATC
  • P=MC (correct)
  • What does monopoly power refer to?

  • Extent to which a firm can raise prices without losing customers (correct)
  • Extent to which a firm has low production costs
  • Extent to which a firm can lower prices without losing customers
  • Extent to which a firm produces efficiently
  • What defines a monopoly in terms of market structure?

  • Multiple producers in the market
  • Low barriers to entry
  • Highly competitive market
  • Single producer in the market (correct)
  • Under monopoly, when does a firm earn profit?

    <p>When MR=MC</p> Signup and view all the answers

    How does the demand curve differ between perfect competition and monopoly?

    <p>Perfect competition has an upward sloping demand curve, while monopoly has a downward sloping demand curve</p> Signup and view all the answers

    Why can a monopolist make supernormal profits even in the long run?

    <p>Due to no easy entry for other firms</p> Signup and view all the answers

    What happens to prices in the long run if firms are making losses in the short run?

    <p>Prices decrease due to an increase in supply caused by more firms leaving the industry.</p> Signup and view all the answers

    What is the optimal point of production for any society according to the text?

    <p>Where price is equal to marginal cost</p> Signup and view all the answers

    Why do perfectly competitive firms in the long run only earn normal profits?

    <p>Because more firms entering the market eliminate supernormal profit possibilities.</p> Signup and view all the answers

    How is productive efficiency achieved according to the text?

    <p>By producing at the bottom of their AC curves.</p> Signup and view all the answers

    What happens to prices in the long run if there are supernormal profits in the short run?

    <p>Prices fall as supply increases with more firms attracted to the market.</p> Signup and view all the answers

    What factor contributes to eliminating supernormal profit possibilities in a perfectly competitive market in the long run?

    <p>More firms being attracted to the market due to losses</p> Signup and view all the answers

    Study Notes

    Production in Perfect Competition

    • Perfectly competitive firms produce at the point where marginal cost equals marginal revenue, achieving allocative efficiency.
    • In the long run, firms only earn normal profits due to the entry and exit of firms in the market.

    Monopoly Power

    • Monopoly power refers to the ability of a firm to set prices above marginal cost, limiting competition and controlling market supply.
    • It enables a single firm to influence market conditions due to lack of substitutes and high barriers to entry.

    Characteristics of a Monopoly

    • A monopoly is defined by a single seller in the market, offering a unique product with no close substitutes.
    • High barriers to entry prevent other firms from entering, maintaining the monopolist's market dominance.

    Profit Generation under Monopoly

    • A monopolist earns profit as long as the price exceeds average total cost, allowing for supernormal profit.
    • Profits can persist in the long run due to barriers to entry that prevent competitors from entering the market.

    Demand Curves

    • The demand curve for firms in perfect competition is perfectly elastic, indicating they are price takers.
    • In contrast, a monopolist faces a downward-sloping demand curve, allowing them to set higher prices.

    Supernormal Profits and Long Run Dynamics

    • Monopolists can sustain supernormal profits in the long run due to the absence of competition and the ability to set their prices.
    • If firms experience losses in the short run, prices may decrease as firms exit the market, helping to restore normal profit conditions.

    Societal Optimal Point of Production

    • The optimal production point for society is where the social welfare is maximized, corresponding to the intersection of social marginal cost and social marginal benefit.

    Normal Profits in Long Run Competition

    • Perfectly competitive firms earn only normal profits in the long run because any supernormal profit attracts new entrants, increasing supply and lowering prices.

    Achieving Productive Efficiency

    • Productive efficiency is achieved when firms operate at the lowest point on their average total cost curve, minimizing costs for the quantity produced.

    Price Adjustments with Supernormal Profits

    • If supernormal profits exist in the short run, new firms are incentivized to enter the market, increasing supply and driving prices down in the long run.

    Eliminating Supernormal Profits

    • The presence of free entry and exit in perfectly competitive markets eliminates the possibility of long-term supernormal profits, as new entrants decrease market prices.

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    Description

    Learn about profit maximization in the long run under perfect competition where all factors of production are variable and firms can enter or leave the industry. Understand how supernormal profits in the short run attract more firms leading to price decreases in the long run.

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