All other things being equal, the possession of substantial market power by a monopolist
ensures that the firm always operates at its minimum efficient scale.
can lead to allocative inefficiency as price exceeds marginal cost.
prevents the firm from making supernormal profits in the long run.
results in a horizontal demand curve for the firm's output.
136 exam-style questions on AQA A Level Economics 1.5 Perfect competition, imperfectly competitive markets and monopoly, covering 1.5.1 Market structures, 1.5.2 The objectives of firms, 1.5.3 Perfect competition, 1.5.4 Monopolistic competition (A-level only), 1.5.5 Oligopoly (A-level only), 1.5.6 Monopoly and monopoly power, 1.5.7 Price discrimination (A-level only), 1.5.8 The dynamics of competition and competitive market processes, 1.5.9 Contestable and non-contestable markets (A-level only), 1.5.10 Market structure, static efficiency, dynamic efficiency and resource allocation (A-level only), and 1.5.11 Consumer and producer surplus (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.