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Macroeconomics: The Financial Sector

The quantity theory of money and interest rates in the money market

  • 3 things to know
  • Component 02

Overview

Recall questions on the Fisher equation MV = PQ with calculations, liquidity preference and the demand for money, and how the money market sets the interest rate.

What you need to know

Answer each one before you reveal it.

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Key term

State the Fisher equation of exchange and say what each symbol stands for.

Key term

Why might an increase in the money supply raise real output rather than prices?

Key term

Why does a sustained rise in the money supply tend to raise the price level?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Why does a sustained rise in the money supply tend to raise the price level?

    Model answer

    More money is chasing the same volume of goods and services, so spending rises faster than output can and the excess demand is absorbed by higher prices.

  2. 2

    State the Fisher equation of exchange and say what each symbol stands for.

    Model answer

    MV = PQ, where M is the money supply, V is the velocity of circulation, P is the average price level and Q is the real level of transactions or output.

  3. 3

    An economy has a money supply of £800 billion and a velocity of circulation of 6. Calculate the money value of national output.

    Model answer

    Using MV = PQ, PQ = £800 billion × 6 = £4,800 billion of nominal output.

  4. 4

    Using MV = PQ, what happens to the price level if the money supply rises by 10% while velocity and real output are unchanged?

    Model answer

    The left-hand side rises by 10%, so with Q fixed the price level must also rise by 10%.

  5. 5

    Which two assumptions must hold before MV = PQ implies that money growth causes proportional inflation?

    Model answer

    Velocity of circulation must be stable and real output must be fixed, which in practice means the economy is already at full capacity.

  6. 6

    Why might an increase in the money supply raise real output rather than prices?

    Model answer

    If the economy has spare capacity, firms can meet the extra spending by employing idle resources, so Q rises instead of P; velocity may also fall if the new money is simply held rather than spent.

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