PES Flashcards
Define Price elasticity of supply
Measures the responsiveness of supply given a change in price
Define price elastic
Supply is said to be price elastic when a change in price causes a proportionately larger change in supply
Define price inelastic
if a change in price causes a proportionately smaller change in supply, supply is said to be price inelastic
State the determinants of PES
time required to produce the product
level of spare capacity
number of stocks/finished goods available
time
perishability of the product
describe the effects of time required to produce the product
- the greater the amount of time needed to produce the product the more price inelastic the supply will be. If the product can be produced quickly, firms will be able to respond to changes in price rapidly .
- Therefore products with a a short production time tend to be price elastic supply
Effect of level of spare capacity on price elasticity
- greater the spare capacity is in an industry, the more PE supply will be. This is because there will be factors of production available to be used in production.
- Therefore, if there was a price rise the industry/firm would likely to be able to respond quickly by increasing production
What is the effect of the number of stocks/finished goods available
the more finished goods available, the more price elastic supply will be. This is becuase firms will be able to respond to a price rise by relasing some/all of these stocks o to the markets straight away
Effect of time on PES
time gives firms the chance to expand or reduce production. therefore, the greater the time period, the more price elastic supply will be
Effect of perishabbility on PES
Some products are more perishable than others e.g mushrooms. The more perishable a product is, the harder it is to build up stocks of it. Therefore, the more price inelastic in supply the product is
Equation for PES
% change in Qs/ % change in price
What does PES value of greater than 1 mean
Relatively elastic
- quantity supplied changes by a larger percentage than price so supply is relatively responsive to price. The curve will bemore sloping, starting on the price axis
What does PES value between 0 and 1 mean
Relatively inelastic
- quantity supplied changes by a smaller
percentage than price so supply is relatively unresponsive to price. The curve will be
steep, starting on the quantity line axis
What does PES value of 1 mean
unitary elasticity of supply
- quantity supplied changes by exactly the
same percentage as price. This would be shown as a curve which starts in the origin,
is steeper than an elastic curve but more sloping than an inelastic curve
What does PES value of 0 mean
perfectly inelastic
- a change in price has no effect on output
so demand is completely unresponsive to price. This would be shown by a vertical
line.
What does the PES value of infinity mean
Perfectly elastic PES is where PES=infinity : a change in prices means that quantity supplied falls to 0 and supply is very responsive to price. This would be shown by ahorizontal line