Production, Cost, and the Perfect Competition Model
What assumption about entry into a perfectly competitive industry ensures zero economic profits in the long run?
Exclusive access to essential raw materials
Free and unrestricted entry and exit from the industry
Entry barriers such as high capital requirements
Long-term contracts with buyers locking prices above costs
In perfect competition, if a firm’s marginal cost exceeds its average total cost at some level of output, what can we infer about that level of output?
Production should be increased beyond this point to continue making normal profits.
It is greater than or equal to the profit-maximizing quantity.
It corresponds with negative economic profits.
It represents minimum efficient scale operation point.
What does "marginal revenue" refer to in a perfectly competitive market?
The extra revenue gained from selling one additional unit of output.
The change in total cost when one more unit is produced.
The total revenue divided by the number of units sold.
The difference between average total cost and average variable cost for one unit.
What role do individual buyers and sellers play in determining prices in a perfectly competitive market?
They are price takers.
They negotiate prices individually.
Sellers have influence over setting prices.
Buyers dictate the market price.
What role do trade-offs play in a consumer's decision-making process in a perfectly competitive market?
They choose between different combinations of goods within budget constraints due to scarce income or wealth.
Trade-offs don't exist as governments provide necessities minimizing choice necessity.
No trade-offs are needed because all products have the same price.
Consumer preferences don't include trade-offs as availability is guaranteed.
In perfect competition, if the government imposes an effective quota on production, what is most probable outcome on deadweight loss?
There is no deadweight loss since quotas ensure stable prices for consumers and profits for producers.
Deadweight loss remains unchanged as long as demand remains constant.
Decreased deadweight loss since quotas can potentially stabilize volatile markets and improve welfare overall.
Deadweight loss increases due to loss of allocative efficiency.
What does it mean when economists say firms in perfect competition are "price takers"?
Firms accept the market price and cannot influence it through their own actions.
Firms are able to charge different prices based on customer loyalty.
Firms create their own prices based on their production costs.
Firms collude with others to set prices artificially high.

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Which item would represent an opportunity cost for a farmer choosing between growing wheat and corn in a perfectly competitive market?
Water utilized during the growth cycle regardless of crop type.
Income from selling corn if they choose to grow wheat instead.
Machinery wear and tear that happens with either crop choice.
Cost of seeds required for planting wheat or corn.
In perfect competition, when a consumer faces scarcity, what is likely to happen?
Consumers prioritize their spending on goods they value most.
The government redistributes goods to manage scarcity for consumers.
Scarcity forces producers to lower prices to zero.
All consumers will spend equally across all products available.
What happens to consumer expenditure on a good when there's an upward shift of supply curve and the good has an income-inelastic demand?
Consumer expenditure decreases.
Consumer expenditure increases due to higher quantity purchased.
Consumer expenditure becomes indeterminate as it depends on the level of income elasticity relative to price elasticity.
Consumer expenditure remains unchanged due to price decrease offset by quantity increase.