Perfect competition (OCR A-Level Economics): Quizzes

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Perfect competition
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What defines perfect competition?

Many small firms, identical products

In perfect competition, what are the products offered by sellers?

Homogeneous and identical

When does supernormal profit occur in the short run?

When P>ATCP > ATC

When does a firm incur a loss in the short run?

When P<ATCP < ATC

At what output level do firms maximize profit?

Where MC=MRMC = MR

What profit do firms earn in the long run?

Normal profits

What happens when firms make supernormal profits?

New firms enter the market

What occurs when firms make losses?

Firms exit the market

What is a price taker?

Firm that accepts market price

What is the shape of an individual firm's demand curve?

Perfectly elastic

In perfect competition, what equals price?

MRMR and ARAR

When is allocative efficiency achieved?

When P=MCP = MC

When is productive efficiency achieved?

At minimum ACAC curve

What condition exists in long-run equilibrium?

P=P = minimum ACAC

What characterizes perfect information in this market?

Full knowledge of prices & products

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