SCERT Kerala lessons

ORIGINAL STUDY COMPANION PADIKAM CLASS 12 | COMMERCE / HUMANITIES Economics Kerala SCERT / prescribed NCERT core lessons 12 chapter lessons Quick explanations, core points, exam practice and chapter-specific notation in one consistent format. Padikam explanations are independently written. Official textbooks are used as the coverage map, chapter sequence and terminology reference. PADIKAM | KERALA CLASS 12 1

Contents 01 Microeconomics: Introduction 07 Macroeconomics: Introduction 02 Microeconomics: Theory of Consumer 08 Macroeconomics: National Income Behaviour Accounting 03 Microeconomics: Production and Costs 09 Macroeconomics: Money and Banking 04 Microeconomics: Firm under Perfect 10 Macroeconomics: Income Determination Competition 11 Macroeconomics: Government Budget and 05 Microeconomics: Market Equilibrium the Economy 06 Microeconomics: Non-Competitive Markets 12 Macroeconomics: Open Economy Study rhythm Read the quick explanation, recall the core points aloud, then answer the prompts without looking back. Use the official textbook links for full prescribed readings, activities and diagrams. Textbook and verification links

1. https://www.hsslive.in/2015/05/plus-two-2-new-text-booksscert.html
2. https://samagra.kite.kerala.gov.in/
3. https://ncert.nic.in/textbook.php
4. https://www.hsslive.in/2016/09/plus-two-economics-study-notes.html PADIKAM | KERALA CLASS 12 2

CHAPTER 01 Microeconomics: Introduction Quick understanding Microeconomics studies how consumers, firms and markets allocate scarce resources among alternative uses. Core points Check your learning Scarcity creates choice and opportunity cost. Explain the central idea of Microeconomics: Introduction in your Positive analysis describes; normative analysis own words. judges. Apply one idea from Microeconomics: A production possibility curve shows trade-offs and Introduction to a textbook-style example efficiency. or source. One-line recall Scarcity creates choice and opportunity cost. PADIKAM | KERALA CLASS 12 3

CHAPTER 02 Microeconomics: Theory of Consumer Behaviour Quick understanding Consumer theory explains choice using preferences, utility, budget limits and demand. Core points Check your learning A budget line records affordable combinations. Explain the central idea of Microeconomics: Theory of Consumer Indifference curves represent ranked preferences. Behaviour in your own words. Equilibrium occurs where the best reachable Apply one idea from Microeconomics: preference meets the budget. Theory of Consumer Behaviour to a textbook-style example or source. Equation and notation Budget: Pₓx + Pᵧy = M Price elasticity Eᵈ = (% change in quantity demanded) / (% change in price) SYMBOLS AND UNITS Pₓ, Pᵧ: prices in currency per unit x, y: quantities M: consumer income in currency Eᵈ: price elasticity, dimensionless One-line recall A budget line records affordable combinations. PADIKAM | KERALA CLASS 12 4

CHAPTER 03 Microeconomics: Production and Costs Quick understanding A firm transforms inputs into output and faces short-run and long-run cost relationships. Core points Check your learning Marginal product is the addition from one more Explain the central idea of variable input. Microeconomics: Production and Costs in your own words. Diminishing marginal product is a short-run pattern, not an immediate fall in total product. Apply one idea from Microeconomics: Production and Costs to a textbook-style Marginal cost intersects average cost near its example or source. minimum. Equation and notation AP = TP / L MP = ΔTP / ΔL TC = TFC + TVC MC = ΔTC / ΔQ SYMBOLS AND UNITS TP, AP, MP: total, average and marginal product L: variable input units TC, TFC, TVC: cost amounts in currency Q: output quantity MC: currency per additional unit One-line recall Marginal product is the addition from one more variable input. PADIKAM | KERALA CLASS 12 5

CHAPTER 04 Microeconomics: Firm under Perfect Competition Quick understanding A competitive firm takes market price as given and selects output by comparing revenue and cost. Core points Check your learning For a price-taking firm, average and marginal Explain the central idea of revenue equal price. Microeconomics: Firm under Perfect Competition in your own words. Profit is total revenue minus total cost. Apply one idea from Microeconomics: The short-run supply curve follows marginal cost Firm under Perfect Competition to a above average variable cost. textbook-style example or source. Equation and notation TR = P × Q Profit = TR - TC Firm equilibrium: MR = MC with rising MC SYMBOLS AND UNITS TR, TC, profit: currency amounts P: price per unit Q: quantity MR, MC: currency per additional unit One-line recall For a price-taking firm, average and marginal revenue equal price. PADIKAM | KERALA CLASS 12 6

CHAPTER 05 Microeconomics: Market Equilibrium Quick understanding Market equilibrium occurs where planned demand equals planned supply, and shifts change equilibrium price and quantity. Core points Check your learning A movement along a curve follows own-price change. Explain the central idea of Microeconomics: Market Equilibrium in A shift follows another determinant. your own words. Price ceilings and floors create consequences when Apply one idea from Microeconomics: binding. Market Equilibrium to a textbook-style example or source. Equation and notation At equilibrium: Qd(P*) = Qs(P*) SYMBOLS AND UNITS Qd, Qs: quantities demanded and supplied P*: equilibrium price in currency per unit One-line recall A movement along a curve follows own-price change. PADIKAM | KERALA CLASS 12 7

CHAPTER 06 Microeconomics: Non-Competitive Markets Quick understanding Market power allows price or output decisions to differ from perfect competition. Core points Check your learning A monopoly faces the market demand curve. Explain the central idea of Microeconomics: Non-Competitive Product differentiation supports monopolistic Markets in your own words. competition. Apply one idea from Microeconomics: Oligopoly decisions are strategically interdependent. Non-Competitive Markets to a textbook- style example or source. One-line recall A monopoly faces the market demand curve. PADIKAM | KERALA CLASS 12 8

CHAPTER 07 Macroeconomics: Introduction Quick understanding Macroeconomics studies economy-wide output, employment, prices and linkages among sectors. Core points Check your learning Aggregate variables are not simple stories about one Explain the central idea of household or firm. Macroeconomics: Introduction in your own words. Stocks are measured at a point; flows over a period. Apply one idea from Macroeconomics: Models simplify reality to examine defined Introduction to a textbook-style example relationships. or source. One-line recall Aggregate variables are not simple stories about one household or firm. PADIKAM | KERALA CLASS 12 9

CHAPTER 08 Macroeconomics: National Income Accounting Quick understanding National accounts measure production and income consistently while avoiding double counting. Core points Check your learning Value added, income and expenditure methods Explain the central idea of should agree in principle. Macroeconomics: National Income Accounting in your own words. Domestic and national aggregates differ through net factor income from abroad. Apply one idea from Macroeconomics: National Income Accounting to a Real GDP separates output change from price textbook-style example or source. change. Equation and notation GDP = C + I + G + (X - M) NDP = GDP - Depreciation GDP deflator = (Nominal GDP / Real GDP) × 100 SYMBOLS AND UNITS GDP, C, I, G, X, M, NDP: currency amounts per Depreciation: currency amount per period accounting period GDP deflator: index number One-line recall Value added, income and expenditure methods should agree in principle. PADIKAM | KERALA CLASS 12 10

CHAPTER 09 Macroeconomics: Money and Banking Quick understanding Money facilitates exchange and banking connects deposits, credit creation and central-bank policy. Core points Check your learning Money serves as medium, unit, store and deferred- Explain the central idea of payment standard. Macroeconomics: Money and Banking in your own words. Commercial banks create deposits within reserve and demand limits. Apply one idea from Macroeconomics: Money and Banking to a textbook-style The central bank issues currency and manages example or source. credit conditions. Equation and notation Simple money multiplier = 1 / reserve ratio SYMBOLS AND UNITS Reserve ratio: fraction of deposits, dimensionless Money multiplier: dimensionless One-line recall Money serves as medium, unit, store and deferred-payment standard. PADIKAM | KERALA CLASS 12 11

CHAPTER 10 Macroeconomics: Income Determination Quick understanding Short-run output is determined where planned aggregate demand equals production, with multiplier effects from autonomous spending. Core points Check your learning Consumption depends partly on disposable income. Explain the central idea of Macroeconomics: Income Determination MPC plus MPS equals one. in your own words. Excess or deficient demand can create inflationary or Apply one idea from Macroeconomics: unemployment pressure. Income Determination to a textbook-style example or source. Equation and notation Y = C + I C = C� + cY Multiplier k = 1 / (1 - MPC) = 1 / MPS SYMBOLS AND UNITS Y, C, I, C̄ : currency amounts per period c or MPC: marginal propensity to consume MPS: marginal propensity to save k: multiplier, dimensionless One-line recall Consumption depends partly on disposable income. PADIKAM | KERALA CLASS 12 12

CHAPTER 11 Macroeconomics: Government Budget and the Economy Quick understanding A government budget records expected receipts and expenditure and supports allocation, redistribution and stabilisation. Core points Check your learning Revenue and capital items follow different effects on Explain the central idea of assets and liabilities. Macroeconomics: Government Budget and the Economy in your own words. Fiscal deficit measures total borrowing need under the stated convention. Apply one idea from Macroeconomics: Government Budget and the Economy to Budget choices influence demand and distribution. a textbook-style example or source. Equation and notation Revenue deficit = Revenue expenditure - Revenue receipts Fiscal deficit = Total expenditure - Total non-debt receipts Primary deficit = Fiscal deficit - Interest payments SYMBOLS AND UNITS All deficit, receipt, expenditure and interest values: currency amount per budget year One-line recall Revenue and capital items follow different effects on assets and liabilities. PADIKAM | KERALA CLASS 12 13

CHAPTER 12 Macroeconomics: Open Economy Quick understanding An open economy trades goods, services and assets, so exchange rates and the balance of payments link domestic and world activity. Core points Check your learning Current and capital/financial transactions record Explain the central idea of different flows. Macroeconomics: Open Economy in your own words. Currency demand and supply influence a flexible exchange rate. Apply one idea from Macroeconomics: Open Economy to a textbook-style A balance-of-payments account is an accounting example or source. statement, not simply a profit score. Equation and notation Balance of trade = Exports of goods - Imports of goods SYMBOLS AND UNITS Exports, imports and balance: currency amount per Exchange rate: units of one currency per unit of period another One-line recall Current and capital/financial transactions record different flows. PADIKAM | KERALA CLASS 12 14