In: Economics
Price elasticity refers to how quantity demanded or supplied of a good changes when it's price changes. In other words it is how much people react to a change in price of an item.
Price elasticity of demand refers to how changes to price affect the quantity demanded of a good. Conversely, price elasticity of supply refers to how changes in price affect the quantity supplied. Thus market equilibrium is achieved when demand is equal to quantity supplied.
Nonprice factors play an important role in determination of price elasticity. There are various non-price factors such as income, price of related goods, taste and preferences,etc which affect demand of a good. As income increases demand for a particular good also increases and vice versa. Price of substitute good also affect the demand.
Non-price factors also affect supply such as cost of production, improvement in technology,taxes etc. When cost of production as well as taxes increase price will also increase resulting in fall in supply.