What is Market Equilibrium?
When the supply and demand curves intersect, the market is in equilibrium. This is where the quantity demanded and quantity supplied are equal. The corresponding price is the equilibrium price or market-clearing price, the quantity is the equilibrium quantity.
Figure#01
The market equilibrium, also known as the point where market forces meet is basically the intersection of the demand and supply. In economics, we talk about the effect of a price change on the whole market, therefore we include both consumers and producers in our analysis. Every market needs to be in equilibrium in order to prosper, and countries work towards finding the best equilibrium aswell as finding ways to keep up with the equilibrium price. Too much supply of a good will cause excess of supply whereas if too little is demanded, it results in excess of demand.
Surplus And Shortage:(Market Equilibrium)
If the market price is above the equilibrium price, quantity supplied is greater than quantity demanded, creating a surplus. Market price will fall.
Example: if you are the producer, you have a lot of excess inventory that cannot sell. Will you put them on sale? It is most likely yes. Once you lower the price of your product, your product’s quantity demanded will rise until equilibrium is reached. Therefore, surplus drives price down.
Figure#02
If the market price is below the equilibrium price, quantity supplied is less than quantity demanded, creating a shortage. The market is not clear. It is in shortage. Market price will rise because of this shortage.
Example: if you are the producer, your product is always out of stock. Will you raise the price to make more profit? Most for-profit firms will say yes. Once you raise the price of your product, your product’s quantity demanded will drop until equilibrium is reached. Therefore, shortage drives price up.
If a surplus exist, price must fall in order to entice additional quantity demanded and reduce quantity supplied until the surplus is eliminated. If a shortage exists, price must rise in order to entice additional supply and reduce quantity demanded until the shortage is eliminated.
Here at poitn "B" this is surplus because quantity supply is greater then the quantity demanded. And at the point of "A" quantity demanded is greater then quantity supply so there is a shortage point.
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