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.
Unit 8: Electric Charges, Fields, and Gauss's Law
Charge, Coulomb's law, superposition, electric fields of point and continuous charges, and Gauss's law.
12 questions · ~18 min
Unit 9: Electric Potential
Electric potential energy, electric potential of point and continuous charges, equipotentials, and the field-potential relation.
12 questions · ~18 min
Unit 10: Conductors and Capacitors
Conductors in electrostatic equilibrium, capacitance, dielectrics, stored energy, and energy density.
12 questions · ~18 min
Unit 11: Electric Circuits
Current, resistance, DC circuits, Kirchhoff’s rules, RC circuits, and power.
12 questions · ~18 min
Unit 12: Magnetic Fields and Electromagnetism
Magnetic forces on charges and currents, the Biot-Savart law, and Ampère's law.
12 questions · ~18 min
Unit 13: Electromagnetic Induction
Magnetic flux, Faraday's and Lenz's laws, inductance, and RL and LC circuits.
12 questions · ~18 min
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.