What is happening at the vertical section of aggregate supply (AS)?

Question

BlackTom AI · Accepted Answer

At the vertical section of the aggregate supply curve, total output cannot increase because the economy is at its full-employment (potential) level of output; any additional aggregate demand only raises the price level.

1) Relevant concepts:
- Aggregate Supply (AS) shows total goods and services firms will produce at each price level.
- In Keynesian/short-run diagrams AS often has three regions: a flat (horizontal) region with large spare capacity, an upward-sloping region where resources become scarcer, and a vertical region at full employment.
- Long-run AS (LRAS) is vertical at potential GDP because real output is determined by factors of production (labor, capital, technology), not the price level.

2) Step-by-step reasoning:
- Start at the vertical segment: firms are using nearly all available labor and capital. 
- If aggregate demand rises, firms cannot expand real output because there are no additional workers or machines readily available to increase production.
- Instead, competition for scarce resources bids up wages and input prices; firms raise output prices rather than quantities. Thus price level increases, output stays the same.

3) Intermediate conceptual steps:
- Resources utilization → at full employment utilization ≈ 100% → marginal cost of producing extra units rises infinitely or impractically → firms respond by increasing prices not quantities.
- In long run, factor supplies and technology set potential output; price-level changes do not shift real output.

4) Why the correct answer is correct:
- "Total output cannot increase" precisely describes the defining feature of the vertical AS: output is fixed at potential GDP regardless of price changes.

5) Why other options are incorrect:
- "All of these" is wrong because the other choices contradict each other (e.g., "plenty of spare production capacity" is opposite of full employment).
- "There are few unused resources" is misleading: the vertical section implies essentially no unused resources, not merely "few."
- "There is plenty of spare production capacity" is false; that describes the horizontal section, not the vertical.

6) Conclusion:
This confirms the provided correct answer: total output cannot increase.

What is happening at the vertical section of aggregate supply (AS)?Single choice

Similar Questions

What would raise aggregate supply (AS)?

What would shift aggregate supply (AS) to the right?

What is happening at the vertical section of aggregate supply (AS)?

What is happening at the upward-sloping section of aggregate supply (AS)?

What would shift aggregate supply (AS) to the right?

What would lower aggregate supply (AS)?

Which of the following increases aggregate supply in the short-run, everything else held constant?

What would shift aggregate supply (AS) to the left?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler