4.1.3.5 - Equilibrium Flashcards
Define equilibrium
When the demand is equal to supply, meaning there is no shortage or surplus
Define disequilibrium
Any point when the demand is not equal to the supply
Causal chain structure for a 9 mark Q
- the (d/s) curve has shifted
- at initial price, there is disequilibrium, causing an excess (d/s)
- excess (d/s) caused prices to (^/v)
- firms incentivised to produce (more/less), why, (contraction/ extension) along supply curve. Consumers are incentivised to buy (less/more), why, (contraction/extension) along demand curve
- in this market, equilibrium moved from (q1,p1) to (q2,p2). (^/v) in (d/s) caused price to (^/v) ad quantity to (^/v)
Define equilibrium price
The price of a product at which demand is equal to supply
Define equilibrium quantity
The amount of a good or service in which the supply is equal to the demand
Define free market forces
Interaction of demand and supply determines the price and quantities of a product in the market without government intervention.
What are the 3 price functions
- signalling function
- incentive function
- rationing or allocative function
What is the incentive function
High prices incentive firms to produce more, as they seek higher prices therefore higher profit.
Lower prices may incentivise consumers to purchase more, as they seek to maximise their utility by seeking goods and services at their lowest possible price.
What is the signalling function
Prices carry information that is used by consumers and producers to make market plans
What is consumer surplus
The difference between how much buyers are prepared to pay for a good and what they actually pay.
Ir occurs when the price that consumers are willing to pay is higher than what they are paying
What is producer surplus
the difference between the market price which firms receive and the price at which they are prepared to supply at. Usually the price they are prepared to sell at is higher than the market price, so product surplus represents the benefit the producer receives from selling the products
What does consumer surplus demonstrate
- social welfare
What happens when at a disequilibrium
Welfare is lost