Quiz on Perfectly Competitive Markets

What is the market structure where firms have no market power and are price takers?

• Monopoly

• Oligopoly

• Perfect competition

• Monopolistic competition

Answer explanation

In perfect competition, firms have no market power and are price takers, meaning they must accept the market price as given.

In perfectly competitive markets, what type of profit do firms make in the long run?

• Excessive profit

• Zero economic profit

• Negative profit

• Variable profit

Answer explanation

In perfectly competitive markets, firms make zero economic profit in the long run due to intense competition driving prices down to the level of production costs.

What characterizes the products sold by firms in perfectly competitive markets?

• Differentiated products

• Homogeneous or identical products

• Unique products

• Branded products

Answer explanation

Products sold by firms in perfectly competitive markets are characterized by being homogeneous or identical, meaning they are indistinguishable from one another.

What happens to the price a perfectly competitive firm can charge if it tries to raise it above the market price?

• Buyers will still buy the product at the higher price

• Buyers will go to another firm

• The firm will make more profit

• The firm will become a monopoly

Answer explanation

If a perfectly competitive firm tries to raise the price above the market price, buyers will go to another firm offering the product at the market price, leading to a loss of customers for the firm.

What type of demand curve does a perfectly competitive firm face?

• Downward sloping

• Upward sloping

• Vertical

• Horizontal

Answer explanation

A perfectly competitive firm faces a horizontal demand curve because it can sell all units of output at the prevailing market price.

When will a firm maximize its profit?

• When marginal cost is greater than marginal revenue.

• When marginal cost is less than marginal revenue.

• When marginal cost is equal to marginal revenue.

• When marginal cost is equal to average cost.

Answer explanation

A firm maximizes profit when marginal cost equals marginal revenue, indicating optimal production level.

What is the shape of the marginal cost curve?

• Upward sloping initially and then downward sloping.

• Downward sloping initially and then upward sloping.

• Horizontal throughout.

• Vertical throughout.

Answer explanation

The marginal cost curve is downward sloping initially due to economies of scale, then upward sloping due to diseconomies of scale.

What can be inferred about PC Firm X ?

• It is making a normal profit in the short run.

• It is making an economic profit in the short run.

• It is making zero economic profit in the short run.

• It is not making any profit in the short run.

Answer explanation

PC Firm X is making an economic profit in the short run, as inferred from the text.

What happens in the long run in a perfectly competitive market?

• Firms continue to make economic profits.

• Firms start making losses.

• Firms make zero economic profit.

• Firms' average costs increase.

Answer explanation

In a perfectly competitive market, firms make zero economic profit in the long run due to intense competition driving prices down to the level of average costs.

What is the result of more sellers entering a PC market?

• The supply curve shifts leftward, increasing market price.

• The supply curve shifts rightward, decreasing market price.

• The demand curve shifts rightward, increasing market price.

• The demand curve shifts leftward, decreasing market price.

Answer explanation

More sellers entering a market increases the supply, shifting the supply curve rightward and decreasing the market price.