Market Equilibrium — Syllabus
Madhya Pradesh Board · Class 12 · Economics
What Market Equilibrium covers in Madhya Pradesh Board Class 12 Economics: 4 topics, for the 2026-27 session. Topics include Core idea of market.
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Topics in Market Equilibrium
1. Core idea of market equilibrium
- Equilibrium is a zero excess demand-zero excess supply situation.
- An equilibrium is a situation where the plans of all consumers and firms in the market match and the market clears.
- Market demand curve shows the quantity all consumers together wish to buy at different prices, taking price as given.
2. Example 5.1: Wheat market with fixed number of firms
- In Example 5.1, market demand is q^D = 200 - p for 0 <= p <= 200 and q^D = 0 for p > 200.
- In Example 5.1, market supply is q^S = 120 + p for p >= 10 and q^S = 0 for 0 <= p < 10.
- The equilibrium price of wheat is Rs 40 per kg.
3. Labour market and wage determination
- In the labour market, households supply labour and firms demand labour, opposite to the goods market.
- Labour here means hours of work provided by labourers, not the number of labourers.
- The wage rate is determined where market labour demand and market labour supply intersect.
4. Shifts in demand and supply
- A rightward demand shift with unchanged supply raises both equilibrium price and quantity when the number of firms is fixed.
- A leftward demand shift with unchanged supply lowers both equilibrium price and quantity when the number of firms is fixed.
- An increase in consumer income increases demand for a normal good such as clothes, causing a rightward shift in demand and no change in supply.
Key Concepts
Central concept: Market equilibrium in perfectly competitive markets
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