Explain how an effective price ceiling affects buyers and how it affects sellers in a competitive market.

An effective price ceiling is a government-imposed restriction on the maximum price that can be charged for a particular good or service. It is usually set below the market equilibrium price. Now, let's examine how it affects buyers and sellers in a competitive market.

Buyers:
1. Lower prices: The price ceiling reduces the price at which the good or service can be sold. This benefits buyers as they can purchase the product at a lower price than they would in a free market.
2. Increased affordability: The lower price allows more buyers to afford the product, resulting in increased demand.
3. Shortages and rationing: However, if the ceiling is set below the equilibrium price, it can create shortages since suppliers are discouraged from supplying the product at a lower price. In such cases, buyers may need to be rationed or face limited availability.

Sellers:
1. Reduced profitability: The price ceiling limits the amount sellers can charge for their product, reducing their profit margins. This can discourage suppliers from entering the market or cause existing sellers to reduce production.
2. Inefficient allocation: When the price ceiling causes shortages, sellers might not be able to meet the increased demand, resulting in an inefficient allocation of resources.
3. Black market activity: In response to the shortage created by the price ceiling, sellers might resort to selling the product on the black market at prices above the ceiling. This can lead to illegal and unregulated transactions.

It's important to note that the impact of a price ceiling can vary depending on factors such as the elasticity of demand and supply, the severity of the ceiling, and the characteristics of the specific market being affected.