Final answer:
A price floor is set above the equilibrium price and results in excess supply when set substantially higher. This can lead to a surplus of goods or services in the market. The surplus is illustrated on a demand and supply diagram.
Step-by-step explanation:
A price floor is a government-imposed minimum price that must be paid for a good or service. It is set above the equilibrium price in order to protect producers and ensure they receive a fair income. When a price floor is set at a substantially high level, it will result in a decrease in demand and an increase in supply. This creates excess supply or a surplus of the goods or services.
For example, let's consider the market for agricultural products. If the government sets a price floor for wheat that is substantially above the equilibrium price, it will result in a surplus of wheat as producers are incentivized to increase production. This excess supply can lead to wastage and storage costs for unsold wheat.
On a demand and supply diagram, a price floor that is set substantially above the equilibrium price is represented by a horizontal line above the intersection of the demand and supply curves, creating a gap between the floor and the equilibrium price. The area between the floor and the equilibrium price represents the excess supply.