In which of the following cases will the price elasticity of demand be relatively less elastic?
Goods on which consumers spend a small proportion of their income.
Understanding Price Elasticity of Demand
Price elasticity of demand measures how much the quantity demanded of a good changes when its price changes. If demand is relatively less elastic, it means that consumers are not very responsive to price changes. The quantity demanded does not change significantly even if the price increases or decreases.
Factors Influencing Price Elasticity of Demand
Several factors determine whether the demand for a good is elastic or inelastic. Let's examine how each option affects price elasticity:
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Goods which can be put to multiple use: Goods that have multiple uses (like electricity which can be used for lighting, heating, cooling, running appliances, etc.) tend to have more elastic demand. If the price increases significantly, consumers might reduce consumption for less essential uses, leading to a larger percentage change in quantity demanded.
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Goods on which consumers spend a small proportion of their income: If a good accounts for only a tiny fraction of a consumer's total income (like salt, matches, or needles), a price change for that good has a negligible impact on their overall budget. Consumers are less likely to alter their consumption significantly in response to such price changes. Therefore, the demand for such goods tends to be relatively less elastic.
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Goods whose consumption can be postponed: If the purchase of a good can be easily delayed (e.g., buying new furniture, a car, or a television), consumers are likely to postpone their purchase if the price rises. This sensitivity to price changes makes the demand more elastic.
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Goods which have close substitutes: The availability of close substitutes is a major determinant of price elasticity. If a good has many close substitutes (e.g., different brands of soft drinks, different types of cooking oil), consumers can easily switch to an alternative if the price of the original good increases. This ease of substitution makes the demand for the original good more elastic.
Based on the analysis, goods on which consumers spend a small proportion of their income tend to have relatively less elastic demand because price changes do not significantly affect the consumer's budget or purchasing power for that item.
| Factor | Effect on Elasticity | Reason |
|---|---|---|
| Availability of Close Substitutes | More Elastic | Consumers can switch easily. |
| Proportion of Income Spent | Less Elastic (if small proportion) | Price change has minimal budget impact. |
| Nature of the Good (Necessity vs. Luxury) | Less Elastic (Necessity) | Needed regardless of price. |
| Time Period Considered | More Elastic (Longer Period) | More time to find substitutes or adjust behavior. |
| Multiple Uses | More Elastic (Potentially) | Consumption can be reduced for less essential uses. |
| Postponability of Consumption | More Elastic | Consumers can delay purchase. |
Revision Table: Key Elasticity Concepts
| Concept | Definition | Example |
|---|---|---|
| Price Elasticity of Demand ($\text{E}_d$) | Measures responsiveness of quantity demanded to a price change. $\text{E}_d = \frac{\%\Delta Q_d}{\%\Delta P}$ | If price increases by 10% and quantity demanded falls by 20%, $\text{E}_d = -2$. |
| Elastic Demand | $|\text{E}_d| > 1$. Quantity demanded changes proportionally more than price. | Luxury cars, restaurant meals. |
| Inelastic Demand | $|\text{E}_d| < 1$. Quantity demanded changes proportionally less than price. | Salt, basic medicines, essential food items. |
| Unit Elastic Demand | $|\text{E}_d| = 1$. Quantity demanded changes proportionally the same as price. | Theoretical benchmark. |
| Perfectly Elastic Demand | $|\text{E}_d| = \infty$. Consumers will buy all they can at one price but nothing at a higher price. | Hypothetical for identical goods with perfect competition. |
| Perfectly Inelastic Demand | $|\text{E}_d| = 0$. Quantity demanded does not change at all when price changes. | Life-saving drugs with no substitutes. |
Additional Information: Understanding Different Types of Elasticity
Beyond price elasticity of demand, economics uses other elasticity concepts to analyze market behavior:
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Income Elasticity of Demand: Measures how the quantity demanded of a good changes in response to a change in consumer income. It helps classify goods as normal goods (positive income elasticity) or inferior goods (negative income elasticity).
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Cross-Price Elasticity of Demand: Measures how the quantity demanded of one good changes in response to a change in the price of another good. It helps identify whether two goods are substitutes (positive cross-price elasticity) or complements (negative cross-price elasticity).
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Price Elasticity of Supply: Measures how much the quantity supplied of a good changes when its price changes. It indicates the responsiveness of producers to price changes.
Understanding these different elasticity measures provides a comprehensive view of how price and income changes affect both consumer behavior and producer decisions in the market.
Similar Questions
The income elasticity of demand is expected to be for goods.
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