Edexcel A-Level Economics B 9EB0
Scarcity, Choice and Potential Conflicts
Enterprise, Business and the Economy
Introducing the Market
The Role of Credit in the Economy
Market Failure and Government Intervention
Revenue, Costs, Profits and Cash
Business Growth and Competitive Advantage
Firms, Consumers and Elasticities of Demand
Productive Efficiency
Life in a Global Economy
The Economic Cycle
Introduction to Macroeconomic Policy
Globalisation
Economic Factors in Business Expansion
Impact of Globalisation on Global Companies
Impact of Globalisation on Local and National Economies
Global Labour Markets
Inequality and Re-Distribution
Competition and Market Power
Market Power and Market Failure
Market Failure Across the Economy
Macroeconomic Policies and Impact on Firms and Individuals
Risk and the Financial Sector
Revenue, Costs, Profits and Cash
Profit as an incentive: market entry and exit
- 3 things to know
- Papers 1 and 3
Overview
Profit as an incentive and a signal to other firms, how entry lowers price and profit, normal and supernormal profit, why firms exit loss-making markets and what happens to price, barriers to entry, sunk costs as a barrier to exit, profit as a source of growth finance, and freedom of entry and exit.
What you need to know
Answer each one before you reveal it.
Define normal profit.
Define supernormal profit.
Questions from this subtopic
Each one with the model answer underneath.
- 1
Why is profit described as an incentive in a market economy?
Model answer
The prospect of profit is what persuades entrepreneurs to bear risk and commit resources, so it drives supply towards the goods consumers value most.
- 2
What signal does high profit in an industry send to other firms?
Model answer
It signals that returns there are above those available elsewhere, which attracts new firms into the market.
- 3
Explain what happens to price and profit as new firms enter a profitable market.
Model answer
Supply increases, so the market price falls and profit per firm is competed down towards the normal level.
- 4
Define normal profit.
Model answer
Normal profit is the minimum return needed to keep the entrepreneur's resources in their present use, and economists treat it as a cost.
- 5
Define supernormal profit.
Model answer
Supernormal profit is any profit above normal profit, that is, a return greater than the resources could earn in their next best use.
- 6
Why do firms leave a market in which losses persist?
Model answer
The resources tied up there would earn more elsewhere, so once the losses cannot be reversed the owners withdraw and redeploy them.
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