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CBSE Notes Class 12 Economics Theory of Consumer Behavior

by aglasem
March 14, 2023
in 12th Class
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Class 12 Economics: Microeconomics – Theory of Consumer Behavior – Get here the Notes for Class 12 Economics: Microeconomics – Theory of Consumer Behavior. Candidates who are ambitious to qualify the Class 12 with good score can check this article for Notes. This is possible only when you have the best CBSE Class 12 Economics Notes, study material, and a smart preparation plan. CBSE 2019 Class 12th Exam is approaching and candidates will have to make the best use of the time available towards the last stage of your CBSE Class 12th Economics Preparation. To help you with that, below we have provided the Notes of 12 Economics for topic Microeconomics -Theory of Consumer Behavior.

  • Class: 12th
  • Subject: Economics 
  • Topic: Microeconomics – Theory of Consumer Behavior
  • Resource: Notes

CBSE Notes Class 12 Economics Theory of Consumer Behavior

Candidates who are pursuing in Class 12 are advised to revise the notes from this post. With the help of Notes, candidates can plan their Strategy for particular weaker section of the subject and study hard. So, go ahead and check the Important Notes for Class 12 Economics: Microeconomics – Theory of Consumer Behavior.

Theory of Consumer Behavior

1. Utility Utility is the want satisfying power of the commodity.
2. Marginal Utility The marginal utility of a commodity is the change in total utility which results from a unit increase in consumption.

MV = TUn – TUn-1 or  Δ in TV/Δin unit of commodity.

Here, MV = Marginal utility
TUn = Total utility of n units of commodity
TUn-1= Total utility of n – 1 units of commodity

3. Total utility Total utility is the sum of marginal Utilities obtained from the consumption of different units of a commodity

TU=EMU

Here, TU = Total utility

EMU = Sum of total marginal utilities

4. Budget Set It refers to attainable combinations of a set of two goods, given prices of goods and income of the consumer.

5. Budget Line It is a line showing different possible combinations of Good-l and Good-2, which a consumer can buy, given his budget and the prices of Good-l and Good-2.

6. Monotonic Preferences A consumer preferences are monotonic if and only if between any two bundles. The consumer prefers the bundles, which has more of at least one of the goods and no less of the other good as compared to the other bundle.

7. Indifference Curve A curve which is a diagrammatic presentation of an indifference set. It shows different combinations of two commodities between which a consumer is indifferent. Each combination offers him the same level of satisfaction.

8. Marginal Rate of Substitution It refers to the rate which the consumer is willing to substitute Good-x for Good-y or it refers to the number of units of Good-y which the consumer is willing to sacrifice for an additional unit of Good-x, it is expressed as Δy/Δx

9. Diminishing Rate of Substitution The law states that as good-l is substitution for good-2, the marginal rate of substitution of good-1 for good-2 goes on diminishing.

10. Indifference Map The collection of indifference curve is called indifference map.

11. Properties of Indifference Curve
(i) Indifference curves are negatively sloped.
(ii) Indifference curves are convex to the point of origin.
(iii) Indifference curves never touch or intersect. each other.
(iv) Indifference curve touches neither X-axis nor Y-axis

12. Conditions for Consumer’s optimum
(i) Budget line should be tangent to the [C.
(ii) Slope of IC = Slope to the budget line
(MRS = Price ratio)

13. Demand Demand refers to the desire to buy a commodity backed by willingness and ability to purchase that commodity at a given point of time.
According to Prof RG Lipsey, “The amount of a commodity that households wish to purchase is called the quantity demanded of that commodity”

14. Demand Function
qx = F(Px)
Here, qx = quantity of x Commodity
Px = Price of x commodity

15. Demand Schedule Tabular presentation of relationship between price and demand of a commodity is called Demand schedule.

16. Demand Curve Graphical presentation of relationship between price and demand of a commodity is called Demand curve.

17. Linear Demand
d = a – bp

Here, d = Quantity demanded
a = Vertical intercept
b = Slope of the demand curve
p = Price of the commodity

18. Law of demand The law states that other things remaining the same, the demand for a commodity expands with fall in its price and contracts with a rise in its price.

19. Exceptions to the Law of Demand
(i) Expectations of further changes in price
(ii) Prestige goods
(iii) Giffen goods
(iv) Necessities

20. Determinants of Den land
(i) Price of the commodity
(ii) Income of the consumer
(iii) Price of related goods
(iv) Taste and preference

21. Normal Goods It is a good whose demand increases with rise in income and decreases with fall in income of the consumer. e.g; full-cream milk, wheat.

22. Inferior Goods It is a good whose demand decreases with rise in income and increases with fall in income of the consumer. e.g; bajra, toned milk.

23. Giffen Goods Giffen goods arc those inferior goods in case of which there is a positive relationship between price and quantity demanded and inverse relationship between income and quantity demanded.

24. Cross Price Effect It refers to change in demand for one commodity owing to change in price of other commodity.

25. Substitute Goods These are those goods which can be interchanged for use. If price of the substitute goods increase, the demand for the concerned goods increase and vice-versa e.g., tea and coffee.

26. Complementary Goods These are those goods which are used simultaneously. If price of one good increases, demand for its complementaries will decrease and vice-versa. e.g., pen and ink.

27. Price Elasticity of Demand It is the degree of responsiveness of quantity demanded of a commodity to the change in its price.

28. Methods of Measuring Elasticity of Demand
(i) Percentage Method
ed = % change in quantity demanded/% change in price
or
ΔQ/ ΔP x P/Q
Here,P= Actual price, Q = Actual quantity
ΔP = Change in price, ΔQ = Change in quantity
(ii) Total Expenditure Method
TE=PxQ
P = Price, Q= quantity, TE = Total expenditure
(iii) Geometric or Print Method
ed = Lower Segment of demand curve/Upper segment of demand curve

29. Degrees of Price Elasticity of Demand
(i) Pefectly Elastic Demand (ed= ∞)
(ii) More than unit elastic or elastic demand (ed > 1)
(iii) Less than unit elastic or inelastic demand (ed < 1)
(iv) Unit elastic demand (ed = 1)
(v) Perfectly inelastic demand (ed = 0)

30. Factors Influencing the Elasticity of Demand
(i) Substitute goods
(ii) postponement of consumption
(iii) Proportion of expenditure
(iv) Nature of the commodity
(v) Uses of the commodity
(vi) The time period
(vii) Income
(viii) Habbits

Class 12 Key Points, Important Questions & Practice Papers

Hope these notes helped you in your schools exam preparation. Candidates can also check out the Key Points, Important Questions & Practice Papers for various Subjects for Class 12 in both Hindi and English language form the link below.

Class 12 Physics कक्षा 12 व्यावसायिक अध्ययन
Class 12 Chemistryकक्षा 12 समाज शास्त्र
Class 12 Maths कक्षा 12 अर्थशास्त्र
Class 12 Biology कक्षा 12 भूगोल
Class 12 Business Studies
Class 12 Economics
Class 12 Sociology

Class 12 NCERT Solutions

Candidates who are studying in Class 12 can also check Class 12 NCERT Solutions from here. This will help the candidates to know the solutions for all subjects covered in Class 12th. Candidates can click on the subject wise link to get the same. Class 12 Chapter-wise, detailed solutions to the questions of the NCERT textbooks are provided with the objective of helping students compare their answers with the sample answers.

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Class 12 Mock Test / Practice

Mock test are the practice test or you can say the blue print of the main exam. Before appearing in the main examination, candidates must try mock test as it helps the students learn from their mistakes. With the help of Class 12 Mock Test / Practice, candidates can also get an idea about the pattern and marking scheme of that examination. For the sake of the candidates we are providing Class 12 Mock Test / Practice links below.

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Class 12 Exemplar Questions

Exemplar Questions Class 12 is a very important resource for students preparing for the Examination. Here we have provided Exemplar Problems Solutions along with NCERT Exemplar Problems Class 12. Question from very important topics is covered by Exemplar Questions for Class 12.

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Chemistryभौतिक विज्ञान
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Class 12 Economics Notes Maths Notes Economics Notes Sociology Notes
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