基礎ECON-MINT-015
An effective price ceiling is set below the equilibrium price. The immediate result is:
A. A shortage: quantity demanded exceeds quantity supplied at the ceiling.✓ 答案
B. A surplus of the good.
C. No change, because ceilings are always above equilibrium.
D. A higher quantity traded than at equilibrium.
解說
A ceiling only binds if it is below equilibrium. At that lower price, buyers want more and sellers offer less, so there is a shortage. The quantity traded is the smaller quantity supplied, which is less than the equilibrium quantity.