Introduction to Economics and Basic Economic Problems
Introduction to Economics and Basic Economic Problems
This domain opens the CHSE Odisha Elective Economics course by asking how societies allocate scarce resources among competing wants. The exam tests definitions of economics, scarcity and choice, opportunity cost, the production possibility frontier (PPF), microeconomics versus macroeconomics, positive versus normative analysis, and the three central problems: what, how and for whom to produce.
Core rules
- Scarcity is the gap between limited resources and unlimited wants; it is not the same as poverty. Because resources are scarce, every choice has an opportunity cost.
- Opportunity cost is the value of the next best alternative forgone, measured in real terms, not necessarily in rupees.
- A PPF shows maximum combinations of two goods with given resources and technology. Points inside are inefficient, points on the curve are efficient, and points beyond are unattainable.
- Movement along a PPF reflects reallocation; a shift outward reflects growth in resources or better technology.
- Microeconomics studies individual units; macroeconomics studies aggregates. Positive statements are testable; normative statements involve value judgments.
Worked example
An economy can produce either 100 tonnes of rice and 0 metres of cloth, or 80 tonnes of rice and 20 metres of cloth. Moving from the first to the second combination, the opportunity cost of 20 metres of cloth is 20 tonnes of rice, so each metre of cloth costs 1 tonne of rice. If the PPF is bowed outward, opportunity cost rises as more cloth is produced because resources are not equally suited to both uses.
Traps
Do not call money paid for a factor opportunity cost unless you identify the alternative forgone. Do not label a point inside the PPF as unattainable. Do not confuse a shift of the PPF with a movement along it. In essay answers, link scarcity to the three central problems explicitly.