Market Equilibrium: This occurs at the price where the quantity demanded by consumers exactly equals the quantity supplied by producers. At this point, the market is 'cleared,' meaning there is no excess supply (surplus) or excess demand (shortage).
The Law of Supply and Demand: Generally, as price increases, the quantity demanded decreases and the quantity supplied increases. The market naturally moves toward equilibrium because surpluses put downward pressure on prices, while shortages put upward pressure on prices.
Total Revenue Calculation: Revenue is the total amount of money a business receives from selling goods or services, calculated as ().
| Feature | Industrial (B2B) | Consumer (B2C) |
|---|---|---|
| Target | Other Businesses | Individual Consumers |
| Volume | Large / Bulk | Small / Individual |
| Decision | Long / Negotiated | Quick / Emotional |
| Product | Technical / Specialized | General / Daily Use |
Identify the Cause: When analyzing a scenario, first determine if the change is a price change (movement) or a non-price factor like income or technology (shift).
Step-by-Step Analysis: To gain full marks in analysis, describe the sequence: 1) The curve shifts, 2) A temporary shortage or surplus is created at the old price, 3) Price adjusts to the new equilibrium.
Labeling Accuracy: Always ensure axes are labeled 'Price' and 'Quantity' and curves are clearly marked 'D' and 'S'. Use subscripts (e.g., ) to show the direction of change.
Confusing Demand with Quantity Demanded: 'Demand' refers to the entire curve, while 'Quantity Demanded' refers to a specific point on that curve. A price change does NOT change demand; it changes the quantity demanded.
Ignoring Externalities: Students often forget that international markets involve extra complexities like exchange rates and trade barriers that do not exist in local or national markets.
Equilibrium Assumption: Do not assume markets are always in equilibrium; they are constantly adjusting toward it in response to dynamic changes.
