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Microeconomics: The Role of Markets

  • 22 subtopics
  • 66 things to know
  • Component 01

What Microeconomics: The Role of Markets covers

The Role of Markets is examined on component 01 of OCR Economics, Microeconomics. 267 recall questions across 22 subtopics.

Where it is assessed

Component 01

Microeconomics, the whole of the first paper.

Check the OCR specification ↗

The 22 subtopics

Each one has its own page.

What you need to know

Answer each one before you reveal it.

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Key term

What does it mean to say money is a medium of exchange?

Key term

Why is the market demand curve flatter than an individual consumer's demand curve?

Evaluation

How does the profit motive produce an upward-sloping supply curve?

Key term

What causes a contraction of supply?

Process

For two supply curves through the same equilibrium, why does the steeper one give producers the larger surplus?

Evaluation

What is one weakness of relying on ceteris paribus?

Key term

How does the market eliminate excess supply?

Evaluation

Demand and supply both fall. What is certain?

Key term

What does an elasticity measure in general terms?

Numbers

Income rises from £25,000 to £27,500 and annual restaurant meals bought rise from 40 to 46. Calculate YED and classify the good.

Key term

How does income elasticity of demand distinguish a necessity from a luxury?

Key term

What does the demand curve look like at each of the two extreme values of PED?

Evaluation

Define market failure.

Evaluation

Define marginal external benefit, and state how it relates to marginal social benefit.

Evaluation

Where does the marginal social cost curve sit relative to marginal private cost when production creates external benefits?

Evaluation

Define information failure, and explain why it causes a misallocation of resources.

Key term

Define a public good.

Key term

Define a private good.

Evaluation

What is a missing market?

Evaluation

How does government expenditure correct market failure through direct provision, and what is its main drawback?

Process

How does a tradable pollution permit scheme work, and why is it efficient?

Evaluation

State three drawbacks of the division of labour for workers.

Process

How does diminishing marginal utility explain the slope of the demand curve?

Process

What is a movement down along the demand curve in response to a price fall called?

Key term

On the diagram, what is the difference between a fall in demand and a fall in quantity demanded?

Process

Give an example of joint supply and trace the effect on the second market.

Key term

How does an improvement in production technology appear on the supply diagram?

Numbers

Demand is P = 20 − 0.01Q and supply is P = 2 + 0.008Q, giving equilibrium at £10 and 1,000 units. Calculate consumer surplus.

Numbers

Demand is P = 20 − 0.01Q and supply is P = 2 + 0.008Q, giving equilibrium at £10 and 1,000 units. Calculate producer surplus.

Process

Why is consumer surplus difficult to measure in practice?

Key term

A poor wheat harvest raises the price of wheat. Trace the effect on the market for bread.

Key term

State the formula for cross elasticity of demand.

Evaluation

Total cost of producing 20 units is £850 and of 21 units is £890. Calculate the marginal cost of the 21st unit.

Evaluation

If the total cost of producing 20 units is £850, what is the average cost per unit?

Evaluation

In a positive consumption externality diagram, how do the two benefit curves relate, and where does the market outcome sit?

Evaluation

What is an everyday example of moral hazard?

Evaluation

Describe the curves in a diagram of a demerit good affected by information failure.

Key term

Why may taxing a demerit good be less effective than expected?

Evaluation

Why is it difficult to decide the right quantity of a public good to provide?

Key term

How does a per-unit subsidy appear on a demand and supply diagram?

Key term

What is an example of regulation, and what is one weakness of relying on it?

Key term

Define specialisation.

Key term

Why do countries specialise and then trade with one another?

Process

How does an indirect tax on a good with external costs work on the diagram?

Key term

What does a binding maximum price do to the market, and what two unintended consequences follow?

Evaluation

What three advantages does the division of labour bring a firm?

Key term

Why does the extent of the division of labour depend on the size of the market?

Key term

What is measured on each axis of a demand curve diagram?

Key term

What is a contraction of demand?

Key term

What is measured on each axis of a supply curve diagram?

Key term

What is an extension of supply?

Key term

Define consumer surplus.

Key term

A leftward shift of supply raises the price. What happens to each surplus?

Key term

What does ceteris paribus mean?

Key term

Supply falls while demand is unchanged. What happens to price and quantity?

Numbers

The price of brand A rises by 20% and quantity demanded of brand B rises by 10%. Calculate XED and interpret it.

Key term

Define total utility.

Key term

What are three causes of market failure?

Key term

How do the cost curves lie in a negative production externality diagram?

Key term

Why does information failure cause a misallocation of resources?

Key term

Which two policies can reduce consumption of a demerit good?

Key term

Name the four characteristics of a pure public good.

Key term

Why does the free rider problem cause market failure?

Key term

What are two drawbacks of using taxation to correct market failure?

Key term

For what two reasons do buffer stock schemes often fail?

Key term

How does regulation differ from legislation?

Take Microeconomics: The Role of Markets further

The same content, four other ways.

Commonly confused

Pairs that lose marks when they are blurred together.

  • Joint demand vs Composite demand

    Joint demand: demand for two goods that are wanted together, so a rise in one raises the other. Composite demand: demand for a good wanted for more than one use, so the uses compete for the same supply.

  • Consumer surplus vs Producer surplus

    Consumer surplus: the difference between what buyers were willing to pay and what they actually paid. Producer surplus: the difference between what sellers received and the least they would have accepted.

  • Joint supply vs Competitive supply

    Joint supply: the position where producing one good necessarily produces another alongside it. Competitive supply: the position where producing one good uses resources that could have made another.

Questions from this topic

Each one with the model answer underneath.

  1. 1

    Define specialisation.

    Model answer

    The concentration of a worker, firm, region or country on producing a narrow range of goods, services or tasks.

  2. 2

    What is the division of labour?

    Model answer

    Breaking a production process down into separate tasks, each carried out by a different worker.

  3. 3

    What three advantages does the division of labour bring a firm?

    Model answer

    Workers become faster through repetition, no time is lost switching between tasks, and each worker can be matched to the job they do best.

  4. 4

    Why does the division of labour reduce average costs?

    Model answer

    Higher output per worker spreads fixed costs over more units and makes specialised machinery worth installing.

  5. 5

    State three drawbacks of the division of labour for workers.

    Model answer

    Repetitive tasks become boring, skills become so narrow that workers are hard to redeploy, and falling motivation can reduce quality.

  6. 6

    Why does specialisation make an economy more vulnerable to shocks?

    Model answer

    Specialists depend on trade for everything they do not produce, so a break in the supply chain or a collapse in demand for the specialism causes widespread disruption.

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Introduction to Microeconomics
Microeconomics: The Role of Markets
Microeconomics: Business Objectives
Microeconomics: Market Structures

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An of demand.
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AAt 0% nothing is levied at all.
BAt 100% there is no reward left for the taxed activity.
CThe activity ceases and there is nothing to tax.

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Economic growth means an increase in real output over a period.
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Microeconomics: The Role of Markets revision questions

What does Microeconomics: The Role of Markets cover in OCR A-Level Economics?
22 subtopics: specialisation, the division of labour and barter, money as a medium of exchange and the gains from specialisation, individual and market demand and joint, competitive and composite demand, movements along and shifts of the demand curve, individual and market supply and joint and competitive supply, movements along and shifts of the supply curve, consumer surplus and producer surplus, how changes in price affect consumer and producer surplus, ceteris paribus and market equilibrium and disequilibrium, changes in demand and supply and their effects on related markets, price and income elasticity of demand and total revenue, cross elasticity, price elasticity of supply and the uses of elasticity, marginal utility, marginal cost and decisions at the margin, market failure and marginal social cost and benefit, positive and negative production and consumption externalities, information failure, asymmetric information and merit and demerit goods, merit and demerit good diagrams and correcting information failure, public, private and quasi-public goods, the free rider problem and the provision of public goods, indirect taxes and subsidies to correct market failure, state provision, price controls, buffer stocks and legislation and regulation, tradable pollution permits and government failure. Each one has its own page with questions and model answers.
How is Microeconomics: The Role of Markets organised?
By the OCR H460 specification, subtopic by subtopic, so it matches the order you are taught it in.

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