Higher price ceilings Multiple choice question. do not affect quantity demanded and quantity supplied. decrease the difference between quantity demanded and quantity supplied. increase the difference between quantity demanded and quantity supplied.With standard supply and demand curves, effective price ceilings create Multiple choice question. welfare loss. implicit taxes on consumers. excess supply. subsidies to producers.Producer surplus increases when the government sets a Multiple choice question. price ceiling below equilibrium. price floor above equilibrium. price ceiling above equilibrium. price floor below equilibrium