Introduction
The Law of Demand is a fundamental principle in economics that explains the relationship between the price of a good or service and the quantity demanded by consumers. It plays a key role in understanding how markets work and how consumers respond to price changes.
Definition
“Ceteris paribus” (all other factors remaining constant), when the price of a good or service falls, the quantity demanded increases; and when the price rises, the quantity demanded decreases.
In simple terms, there is an inverse relationship between price and quantity demanded.
Key Points
Inverse Relationship: Price increase → Quantity demanded decrease, and Price decreases → Quantity demanded increase.
Ceteris Paribus Condition: Assumes no change in income, tastes, population, or prices of related goods.
Applies to most goods: Especially normal goods, where demand rises with income
Reason for the inverse Relationship
Substitution Effect: When prices fall, consumers may switch from more expensive products to the cheaper option.
Income Effect: A lower price increases real purchasing power, allowing consumers to buy more.
Diminishing Marginal Utility: Each additional unit provides less satisfaction, so a lower price is needed to encourage more purchases.
Exceptions to the Law of Demand
The law does not always hold true. Notable exceptions include:
Giffen Goods: Inferior goods where higher prices lead to higher demand due to the income effect.
Veblen Goods: Luxury goods where higher prices make them more desirable as status symbols.
Speculative Goods: Assets people buy more of when prices rise, expecting further increases.
Necessities: Products with demand relatively unresponsive to price changes.
