📝 Unit Tests

AP Physics C: E&M Unit Tests

Pick a unit to drill it head-on. Each unit has 4 different test variations so you can keep retaking until you master it.

26–34% of exam

Coulomb's law, superposition, electric fields, and Gauss's law.

12 questions · ~18 min

Pick a variation

14–17% of exam

Electric potential, potential energy, and conductors in equilibrium.

12 questions · ~18 min

Pick a variation

10–15% of exam

Capacitance, dielectrics, stored energy, and energy density.

12 questions · ~18 min

Pick a variation

17–23% of exam

DC circuits, Kirchhoff’s rules, RC circuits, and power.

12 questions · ~18 min

Pick a variation

17–23% of exam

Magnetic forces & fields, Ampère's law, Faraday's law, inductance, and Maxwell's equations.

12 questions · ~18 min

Pick a variation

How unit tests work

Focused on a single AP unit, between a single-topic quiz and the full diagnostic.
4 variations per unit — pick a fresh variation any time you retake.
Roughly 90 seconds per question — the same pacing as the AP exam.
You'll get a unit-level score, recommended topics to review, and a question-by-question explanation.

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