Introduction to Economics: Basic Concepts and Principles
(Notes for Competitive Exams – JKSSB, UPSC, SSC | Home Academy)
1. Meaning and Definition of Economics
Economics is a social science that studies how individuals, businesses, and governments allocate scarce resources to satisfy unlimited human wants. It examines production, distribution, and consumption of goods and services.
The word Economics comes from the Greek words “Oikos” (household) and “Nomos” (management), meaning management of household resources.
Economics helps answer three fundamental questions of every economy:
What to produce?
How to produce?For whom to produce?
These questions arise because resources are limited while human wants are unlimited.
2. Historical Background of Economics
The development of economics as a discipline evolved over centuries.
Ancient Period
In ancient civilizations such as Aristotle and Plato, economic ideas were discussed mainly in relation to ethics, politics, and household management.
Mercantilist Period (16th–18th Century)
During this period, European thinkers believed that national wealth depended on the accumulation of gold and silver through trade. Governments encouraged exports and restricted imports.
Physiocratic School (France)
French economists like François Quesnay believed that agriculture is the only productive sector and the true source of national wealth.
Classical Economics
The modern discipline of economics started with Adam Smith, whose famous book The Wealth of Nations laid the foundation of modern economics.
Later economists such as David Ricardo and Thomas Robert Malthus further developed classical economic theory.
Modern Economics
In the 20th century, economists like John Maynard Keynes revolutionized economics by emphasizing government intervention to stabilize economic fluctuations.
3. Father of Economics
The title “Father of Economics” is generally given to Adam Smith.
Important Facts for Exams:
| Title | Economist |
|---|---|
| Father of Economics | Adam Smith |
| Father of Modern Economics | Alfred Marshall |
| Father of Macroeconomics | John Maynard Keynes |
| Father of Indian Economics | Dadabhai Naoroji |
4. Definitions of Economics by Economists
Adam Smith (Wealth Definition)
Economics is the study of wealth and its production and distribution.
Alfred Marshall (Welfare Definition)
According to Alfred Marshall,
Economics is the study of mankind in the ordinary business of life.
Lionel Robbins (Scarcity Definition)
Economist Lionel Robbins defined economics as:
“Economics is the science which studies human behaviour as a relationship between ends and scarce means which have alternative uses.”
5. Basic Concepts of Economics
1. Scarcity
Scarcity means limited resources available to satisfy unlimited wants.
Example:
Land, labor, capital, and natural resources are limited.
2. Choice
Because resources are scarce, individuals and societies must choose among alternatives.
Example:
Government choosing between defence spending or health spending.
3. Opportunity Cost
Opportunity cost refers to the value of the next best alternative foregone.
Example:
If a student chooses to study instead of working, the lost income is the opportunity cost.
4. Utility
Utility means satisfaction derived from consumption of goods or services.
Example:
Food satisfies hunger; therefore it provides utility.
5. Production
Production is the process of creating goods and services to satisfy human wants.
6. Distribution
Distribution refers to how income and wealth are shared among factors of production.
7. Consumption
Consumption means using goods and services to satisfy human wants.
6. Basic Principles of Economics
1. Law of Demand
When price increases, demand decreases (other factors constant).
2. Law of Supply
Higher prices encourage producers to supply more goods.
3. Marginal Principle
Economic decisions depend on marginal benefits and marginal costs.
4. Principle of Rational Behaviour
Consumers try to maximize satisfaction with limited income.
5. Principle of Efficiency
Resources must be used in the most productive way.
7. Types (Branches) of Economics
1. Microeconomics
Microeconomics studies individual units of the economy, such as consumers, firms, and markets.
Example:
Price of wheat, demand for smartphones.
2. Macroeconomics
Macroeconomics studies the economy as a whole.
It deals with:
National income
InflationUnemployment
Economic growth
Modern macroeconomics was greatly influenced by John Maynard Keynes.
8. Central Problems of an Economy
Every economy faces three major problems:
What to produce and how much?
How to produce?For whom to produce?
These arise because resources are scarce.
9. Importance of Economics
Economics helps in:
Efficient allocation of resources
Economic planning and policy makingPoverty reduction strategies
Understanding inflation and unemployment
Development planning
For competitive exams like JKSSB, UPSC, SSC, economics provides the foundation for public administration, governance, and development policy.
MCQ Questions for Competitive Exams
1. Who is known as the Father of Economics?
A. Alfred Marshall
B. John Maynard Keynes
C. Adam Smith
D. Lionel Robbins
Answer: C. Adam Smith
2. The book “The Wealth of Nations” was written by
A. David Ricardo
B. Adam Smith
C. Karl Marx
D. Lionel Robbins
Answer: B. Adam Smith
3. The scarcity definition of economics was given by
A. Adam Smith
B. Alfred Marshall
C. Lionel Robbins
D. Karl Marx
Answer: C. Lionel Robbins
4. Economics is primarily concerned with
A. Unlimited resources
B. Limited wants
C. Allocation of scarce resources
D. Politics
Answer: C. Allocation of scarce resources
5. Microeconomics deals with
A. Entire economy
B. Individual economic units
C. National income
D. Inflation
Answer: B. Individual economic units
6. Opportunity cost refers to
A. Monetary cost
B. Next best alternative foregone
C. Total production cost
D. Market price
Answer: B. Next best alternative foregone
7. Which economist gave the welfare definition of economics?
A. Alfred Marshall
B. Lionel Robbins
C. Adam Smith
D. Keynes
Answer: A. Alfred Marshall
8. Economics is a
A. Natural science
B. Social science
C. Physical science
D. Biological science
Answer: B. Social science
9. The basic economic problem arises because
A. Human wants are limited
B. Resources are unlimited
C. Resources are scarce
D. Technology is absent
Answer: C. Resources are scarce
10. Macroeconomics mainly studies
A. Individual firms
B. Household behavior
C. Economy as a whole
D. Consumer choices
Answer: C. Economy as a whole
Exam Tip (Home Academy):
Most questions in JKSSB, SSC, and UPSC prelims are asked from:
Definitions of economics
Father of economicsMicro vs macro economics
Scarcity and opportunity cost
Historical development of economics