Perfect Competition Practice
Watch a price-taking firm pick its output where marginal cost meets the market price, and see the profit rectangle appear. Five exam-style questions on price taking, the shutdown rule, and long-run entry.
One tile of the full perfect competition unit.
The course teaches perfect competition interactively — drag the graphs, practice with feedback, and spaced reviews bring it back before you forget. Free.
Interactive graph
Five practice questions
Pick an answer, then click Check answer to see the explanation.
Question 1 of 5
A wheat farmer sells into a perfectly competitive market. What does the demand curve facing this individual farmer look like?
Question 2 of 5
A competitive firm maximizes profit by producing the quantity where:
Question 3 of 5
The market price falls below a competitive firm's average variable cost at every output level. In the short run the firm should:
Question 4 of 5
Firms in a competitive industry are earning positive economic profit. What happens next, and where does it end?
Question 5 of 5
In long-run equilibrium, a competitive firm earns zero economic profit. Why do firms bother staying in business?
What the course adds
Beyond this one page
The perfect-competition unit has dozens of practice questions on price taking, profit and loss diagrams, the shutdown decision, and long-run equilibrium. Each session pulls from your weak spots — not the same five questions every time.
Spaced reviews
FSRS brings every concept back right before you'd forget. ~50% better retention than re-reading.
Per-concept mastery
Performance Factor Analysis tracks each sub-skill separately — you see which version of the idea is still wobbly.
Diagnostic placement
A short test skips you past what you already know. No re-learning the basics.
For instructors
Assign this to your class
Free, no account needed for students. Paste either snippet into Canvas, Moodle, Blackboard, Google Classroom, or your slide deck.
Sends students to the full page with the worked example and related lessons.
Inlines just the interactive widget in your LMS — no nav, no footer, no signup wall.
Want 50+ more problems with instant feedback?
The full Econ Academy perfect-competition unit includes adaptive practice, spaced repetition, and mastery tracking so you stop forgetting what you just learned.