WAEC 2016 Economics · Question 47
How does producers expectation of a price fall affect the supply curve of a product? There will be
Options
- A.a moment along the curve
- B.a leftward shift
- C.no shift of the supply curve
- D.a shift to the right
Answer: D. a shift to the right
Explanation written with AI and checked against the answer key
Analyze the question: The question asks what happens to the supply curve when producers expect the price to fall in the future.
Concept:
- A change in the product's own current price causes a movement along the supply curve (an extension or contraction of supply).
- A change in a non-price factor (cost of production, technology, taxes, subsidies, weather, number of producers, expectations of future prices) causes a shift of the whole curve.
- Rightward shift = increase in supply. Leftward shift = decrease in supply.
Solution:
- If producers expect the price to fall in the future, they will want to sell as much as possible now, before the price drops. They release their stock onto the market today.
- At every price, the quantity supplied now is greater. So the supply curve shifts to the right.
- By contrast, if producers expect prices to rise, they hold back stock to sell later at higher prices. Current supply falls, and the curve shifts left.
- A movement along the curve only happens when the product's own current price changes, so A is wrong. Since expectation is a non-price determinant, C is wrong too.
Answer: D. a shift to the right
Exam tip: Remember "expect a fall, sell it all." Expected price fall means supply now increases (shift right). Expected price rise means hoarding, so supply now decreases (shift left). Also, always check whether the question describes a change in the product's own price (movement along) or a non-price factor (shift).
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