Understanding Price Elasticity of Demand

The video tutorial explores the concept of price elasticity of demand by examining extreme cases. It uses insulin to illustrate perfect inelasticity, where demand remains constant despite price changes. The tutorial also covers the calculation of elasticity and visualizes the demand curve for insulin. Additionally, it discusses perfect elasticity using vending machines, where small price changes lead to significant demand shifts.

What is the primary reason diabetics continue to purchase insulin despite price changes?

• Insulin is essential for their survival.

• They can find alternatives easily.

• Insulin is a luxury item.

• They are unaware of price changes.

How does the demand for insulin behave when its price increases significantly?

• Demand fluctuates randomly.

• Demand remains constant.

• Demand increases.

• Demand decreases sharply.

In the context of perfect inelasticity, what does the demand curve look like?

• A horizontal line

• A curved line

• A vertical line

• A diagonal line

What analogy is used to explain perfect inelasticity?

• A sponge

• A rubber band

• A brick

• A balloon

What happens to the demand for Coke in a vending machine if its price is slightly lower than the adjacent machine?

• Demand decreases.

• Demand increases significantly.

• Demand becomes unpredictable.

• Demand remains the same.

How does a small price increase affect the demand for Coke in the vending machine example?

• Demand increases.

• Demand decreases slightly.

• Demand drops to zero.

• Demand remains unchanged.

What shape does the demand curve for a perfectly elastic good approach?

• Diagonal line

• Vertical line

• Curved line

• Horizontal line

What is the elasticity of demand when a small price change leads to a large change in quantity demanded?

• Zero

• One

• Infinity

• Negative

In perfectly elastic demand, how does the quantity demanded respond to a 1% change in price?

• It changes by less than 1%.

• It changes by exactly 1%.

• It changes by more than 50%.

• It remains unchanged.

What is the key difference between perfect inelasticity and perfect elasticity?

• Perfect inelasticity has a horizontal demand curve.

• Perfect elasticity has a vertical demand curve.

• Perfect inelasticity shows no change in demand with price changes.

• Perfect elasticity shows no change in demand with price changes.