If the prevailing market price is above the equilibrium price, explain its chain of effects.
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Solution
If the prevailing market price is above the equilibrium price, then there occurs the situation of excess supply. Let us assume that the market price Pk is above the equilibrium price Pe. According to the demand curve, quantity demanded is q′d. Whereas, according to the supply curve, the quantity supplied is q′s. So, it can be seen that there emerges the situation of excess supply equivalent to (q′s−q′d). This excess supply will increase competition among the sellers; consequently, they will reduce the price in order to sell more of their output. The fall in price will continue until price becomes Pe, where market demand equals market supply.