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EconomicsAQA (7136)Microeconomics

Competitive Markets & Firm Behaviour — AQA Economics

AQA A-Level Economics

Market structures and firm behaviour are examined in detail in AQA A-Level Economics (Section 4.1.5). This interactive tool compares the four main market structures — perfect competition, monopoly, oligopoly, and monopolistic competition — using cost and revenue diagrams. Explore short-run and long-run equilibrium, profit maximisation (MC = MR), productive and allocative efficiency, price discrimination, and contestable markets. Includes kinked demand curve analysis for oligopoly and game theory scenarios. Practise diagram construction and 25-mark evaluation skills.

Uses Google Fonts (Cormorant Garamond, Inter Tight). Requires an internet connection for full styling.

Frequently asked questions

What is the profit maximisation rule?+
A firm maximises profit where marginal cost (MC) equals marginal revenue (MR), provided MC cuts MR from below. At this output level, the firm cannot increase profit by producing one more or one fewer unit.
What is the difference between productive and allocative efficiency?+
Productive efficiency occurs when a firm produces at the lowest point on its average cost curve (AC is minimised). Allocative efficiency occurs when price equals marginal cost (P = MC), meaning resources are allocated according to consumer preferences and no reallocation could make anyone better off without making someone worse off.

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