AS & A2 Economics Revision Workshops

AS & A2 Economics - Intensive Exam Coaching & Revision Workshops: Book Now!

Stratford | Fulham | Bristol | Birmingham | Gateshead | Leeds | Manchester


Economics Resources Popular resources on the {my channel} blogPopular resources on the {my channel} blog Economics revision quizzes Resource tags for the blog RSS Feed for the blog Twitter feed for this blog Teacher Email Resource Newsletter Category listing for this blog Economics Blog home page Economics Blog Home Page


Tracker Pixel for Entry

Unit 1 Micro: Price Elasticity of Supply

Sunday, May 13, 2012
Print Tweet This!Save to Favorites

Revision Blog on Price Elasticity of Supply

Price elasticity of supply (Pes) measures the relationship between change in quantity supplied and a change in price.
• If supply is elastic, producers can increase output without a rise in cost or a time delay
• If supply is inelastic, firms find it hard to change production in a given time period.

The formula for price elasticity of supply is:

Percentage change in quantity supplied divided by the percentage change in price

PES values

1. When Pes > 1, then supply is price elastic
2. When Pes

< 1, then supply is price inelastic
3. When Pes = 0, supply is perfectly inelastic
4. When Pes = infinity, supply is perfectly elastic following a change in demand

What factors affect the elasticity of supply?

(1) Spare production capacity: If there is plenty of spare capacity then a business can increase output without a rise in costs and supply will be elastic in response to a change in demand. The supply of goods and services is most elastic during a recession, when there is plenty of spare labour and capital resources.

(2) Stocks of finished products and components: If stocks of raw materials and finished products are at a high level then a firm is able to respond to a change in demand - supply will be elastic. Conversely when stocks are low, dwindling supplies force prices higher because of scarcity in the market.

(3) The ease and cost of factor substitution: If both capital and labour are occupationally mobile then the elasticity of supply for a product is higher than if capital and labour cannot easily be switched. A good example might be a printing press which can switch easily between printing magazines and greetings cards.

(4) Time period and production speed: Supply is more price elastic the longer the time period that a firm is allowed to adjust its production levels. In some agricultural markets the momentary supply is fixed and is determined mainly by planting decisions made months before, and also climatic conditions, which affect the production yield. In contrast the supply of milk is price elastic because of a short time span from cows producing milk and products reaching the market place.

Elasticity of demand and supply and price changes – a quick summary

Elasticity determines how much a shift changes quantity versus price.
• If D increases and S is perfectly inelastic, then price rises and quantity doesn’t change.
• If S increases and D is perfectly inelastic, then price falls and quantity doesn’t change.
• If D increases and S is perfectly elastic, then price stays the same and quantity rises.
• If S increases and D is perfectly elastic, then price stays the same and quantity rises.


blog comments powered by Disqus

AS & A2 Economics Revision Workshops

AS & A2 Economics - Intensive Exam Coaching & Revision Workshops: Book Now!

Stratford | Fulham | Bristol | Birmingham | Gateshead | Leeds | Manchester

Dates and Locations

AS & A2 Economics - Macroeconomics: National & International Economy (Unit 2),  Global/International Economy (Unit 4)

  • Tuesday 25 March 2014 - London (Stratford City)
  • Wednesday 26 March 2014 - London (Fulham Broadway)
  • Thursday 27 March 2014 - Bristol (Cribbs Causeway)
  • Friday 28 March 2014 - Birmingham (Star City)
  • Tuesday 1 April 2014 - Gateshead (Metro Centre)
  • Wednesday 2 April 2014 - Leeds (The Light)
  • Thursday 3 April 2014 - Manchester (Salford Quays)

Post-Easter (AS Economics Units 1&2 Combined;  Global/International Economy (Unit 4))

  • Monday 28 April 2014 - London (Stratford City)
  • Tuesday 29 April 2014 - London (Fulham Broadway)
  • Wednesday 30 April 2014 - Bristol (Cribbs Causeway)
  • Thursday 1 May 2014 - Birmingham (Star City)
  • Friday 2 May 2014 - Manchester (Salford Quays)

tutor2u online store

PowerPoint Lesson Activities Teacher Conferences & CPD Courses
Exam Coaching & Revision Workshops Pre-release Case Study Toolkits
A Level Economics Teaching Support Resources for Business Studies
Digital Magazines  


Enter your Email


AS Economics (Macroeconomics) Revision Guide

WOW! Economics 2014

50+ New Teaching & Learning Resources for A Level & IB Economics

AS, A2 & IB Economics Revision Notes

Latest resources

Resource categories Blog RSS feed Blog RSS Feed

© Copyright Tutor2u Limited 2013 All Rights Reserved