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
Introducing the Market
Excess demand, excess supply and market forces
- 3 things to know
- Papers 1 and 3
Overview
Excess demand and excess supply and how market forces remove them, unsold stock and sell-out concerts as signals, the invisible hand, maximum and minimum prices, rationing a shortage without price, how fast markets clear, late-day price cuts, and pricing above equilibrium.
What you need to know
Answer each one before you reveal it.
What is excess demand?
Describe how market forces remove excess demand.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is excess demand?
Model answer
Excess demand is a shortage, in which at the prevailing price the quantity demanded exceeds the quantity supplied.
- 2
Where on a supply and demand diagram is excess demand shown?
Model answer
It is the horizontal gap between the demand and supply curves at any price below the equilibrium.
- 3
Describe how market forces remove excess demand.
Model answer
Unsatisfied buyers bid the price up, which contracts demand and extends supply until the two are equal again.
- 4
What is excess supply?
Model answer
Excess supply is a surplus, in which at the prevailing price the quantity supplied exceeds the quantity demanded.
- 5
Describe how market forces remove excess supply.
Model answer
Unsold stock leads producers to cut the price, which extends demand and contracts supply until the market clears.
- 6
What signal does a growing pile of unsold stock give a producer?
Model answer
It signals that the price is above the market-clearing level and should be cut, or that output should be reduced.
Other ways to work this
The same content, four other ways.
What is inside Levo
Six ways to work the same material.
Every question in Introducing the Market, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
Or £46 a year, about £3.83 a month. Cancel anytime.