AP Physics C: Electricity & Magnetism Exam Preparation
Prepare for AP Physics C: E&M with calculus-based unit tests, Gauss's law and Faraday's law FRQ practice, and up to 10 AP-style mocks. GradePerfect.
About the AP Physics C: Electricity and Magnetism Exam
AP Physics C: Electricity and Magnetism (E&M) is a calculus-based exam covering the fundamental laws governing electric and magnetic phenomena. The exam consists of 35 Multiple Choice questions (MCQ) and 3 Free Response questions (FRQ). FRQs demand the application of Gauss's law, Faraday's law, and circuit differential equations—making this one of the most mathematically demanding AP exams available.
The Six Units of AP Physics C: E&M (Units 8–13)
- Electrostatics — Coulomb's law, electric fields, electric potential, and Gauss's law applications
- Conductors, Capacitors, and Dielectrics — Charge distribution on conductors, capacitance, and energy stored in electric fields
- Electric Circuits — Ohm's law, Kirchhoff's laws, RC circuits, and differential equations for charge accumulation
- Magnetic Fields — Biot-Savart law, Ampere's law, and magnetic force on charges and currents
- Electromagnetism — Faraday's law, Lenz's law, induced EMF, and energy in magnetic fields
- Electromagnetic Induction — RL circuits, inductance, and the differential equations governing inductive behavior
The Mathematical Depth of AP Physics C: E&M
E&M is frequently described as the more mathematically intensive of the two AP Physics C exams. Students must apply Gauss's law to derive electric fields for symmetric charge distributions, use Faraday's law with calculus to describe time-varying magnetic flux, and set up and solve first-order differential equations for RC and RL circuit behavior. Each FRQ typically carries a significant derivation component where the process matters as much as the result.
How GradePerfect Prepares You for AP Physics C: E&M
Unit Practice Tests
Six unit tests address every major E&M concept, from electrostatic derivations through electromagnetic induction—with problems that require setting up and evaluating integrals in both MCQ and FRQ formats.
Sectional Checkpoint Tests
Checkpoints at 30%, 50%, and 70% of the curriculum integrate electrostatic and electromagnetic concepts, reflecting how later exam topics build on and extend earlier ones.
Up to 10 Full AP-Style Mock Exams
Full-length mocks replicate the 35 MCQ + 3 FRQ format under timed conditions, with FRQ types including Gauss's law surface integrals, Faraday induction problems, and RC/RL circuit differential equations.
Past Papers
Working through released E&M FRQ prompts is particularly valuable for understanding how multi-step derivation problems are scaffolded and how partial credit is allocated across sub-parts.