Step 1: Understanding the Concept:
In macroeconomics, the equilibrium level of income and price is determined by the intersection of the Aggregate Demand (AD) and Aggregate Supply (AS) curves. Aggregate Demand represents the total quantity of all goods and services demanded by the four sectors of the economy (Households, Firms, Government, and Foreigners) at different price levels. Aggregate Supply represents the total quantity of goods and services that producers are willing and able to supply. A shift in either curve changes the equilibrium point, affecting both the general price level and the real GDP (output).
Step 2: Detailed Explanation:
When there is an increase in Aggregate Demand (due to factors like increased government spending, a tax cut, or a rise in consumer confidence), the AD curve shifts to the right. If the Aggregate Supply curve remains stationary, several economic phenomena occur:
1. Market Shortage: At the initial price level, the total demand now exceeds the total supply. This creates a shortage, as consumers are trying to buy more than what is currently available on the shelves.
2. Upward Pressure on Prices: To manage this excess demand, producers begin to raise prices. This is known as Demand-Pull Inflation. The rising prices act as a signal to consumers to reduce demand slightly and to producers to increase supply.
3. Expansion of Output: As long as the economy is not yet at its full-employment limit (the vertical portion of the AS curve), producers will react to higher prices and higher demand by hiring more labor and utilizing more resources to produce more goods. Thus, the total output (Real GDP) increases.
4. New Equilibrium: The economy moves along the upward-sloping AS curve until it reaches a new intersection point with the new AD curve. This new point corresponds to a higher price level ($P$) and a higher level of real output ($Y$).
Step 3: Final Answer:
The general result of a rightward shift in demand against a fixed supply curve is a combination of higher prices and a higher volume of production, assuming there is some slack in the economy.