What is the deadweight loss in a market where the equilibrium quantity is reduced due to a price ceiling, based on the supply and demand curves?

Deadweight loss occurs when the total economic efficiency of a market is reduced, often because of government interventions like price ceilings. When a price ceiling is set below the equilibrium price, it prevents the market from reaching its natural balance, leading to a lower quantity of goods being produced and sold. This means that some consumers who are willing to pay more for the product cannot buy it, and some producers who would be willing to sell at a higher price are unable to do so. For example, if a price ceiling on rent is set below what landlords would charge, fewer apartments will be available, causing some people to miss out on housing. The deadweight loss is represented by the lost transactions that would have occurred at the equilibrium, which are now not happening due to the ceiling.