Moderate

The long run equilibrium level of national income is the level at which ?

Correct answer: D. All investment is used to maintain the existing capital stock at its current level

  • A. economic growth is Zero
  • B. All investment is used in the manufacturing sector
  • C. Economic growth is growing
  • D. All investment is used to maintain the existing capital stock at its current level

Explanation

In a steady-state or long-run equilibrium, gross investment is just sufficient to replace depreciation and maintain the existing capital stock. There is therefore no net addition to capital, although output may remain at its equilibrium level.

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The economy is studied as a whole through national income, gross domestic product, inflation, unemployment, economic growth and business cycles. Coverage includes aggregate demand and supply, consumption and investment, money and banking, fiscal and monetary policy, exchange rates and balance of payments, which distinguishes macroeconomics from the study of individual markets.

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