Calculus-based electromagnetism — small audience, narrow margin between scores.
AP Physics C: E&M is one of the smallest AP exam populations and one of the most demanding. The course assumes confident multivariable-adjacent calculus (line integrals, surface integrals, gradient/divergence/curl in plain language) and applies it across electrostatics, conductors and dielectrics, circuits, magnetism, and electromagnetic induction.
We lean heavily into Gauss's Law and Ampère's Law symmetry choices — picking the right Gaussian surface or Amperian loop is the difference between a 1-line solution and an unsolvable integral. Each lesson walks through the symmetry decision explicitly before any math.
Master AP Physics C: E&M
Calculus-based electricity & magnetism — from electrostatics and circuits to magnetic fields and electromagnetic induction. Diagnostics, FRQ practice, daily questions, and competitive mode.
Start here
Take the free AP Physics C: E&M diagnostic
It finds what you already know and builds your study plan: the topics to clear first, each a short lesson plus an exit quiz.
Take the free diagnosticEverything You Need to Score a 5
Interactive Lessons
Step-by-step lessons covering Coulomb's law, Gauss's law, electric potential, capacitors, DC circuits, magnetic fields, EM induction, and Maxwell's equations — with calculus-based practice problems.
8+ lessons · All unitsDiagnostic Test
Quick assessment across all AP Physics C: E&M units to identify your strengths and weak areas with a personalized study plan.
~35 questions · 30 minFRQ Practice
Practice free-response questions with auto-grading, rubrics, and timed exam simulation. 50% of the AP exam.
16 FRQs · Auto-graded · TimedFull-Length Practice Exam
Complete AP Physics C: E&M exam simulation: 40 MCQ (80 min) + 4 FRQ (100 min) with timed sections and self-graded rubrics.
40 MCQ + 4 FRQ · 3 hours · TimedCompetitive Mode
Challenge other students in real-time E&M question battles. Climb the leaderboard.
Real-time · LeaderboardDaily question
A fresh AP Physics C: E&M question every day covering different units. Build consistency.
New daily · All unitsScore Predictor
Estimate your AP Physics C: E&M exam score from your quiz performance and mastery data.
Live estimate · AP 1-5Practice Test
Full-length timed multiple-choice practice exam covering all AP Physics C: E&M topics.
30 questions · 45 minStudy schedules
Pre-built 4, 8, or 12-week study schedules tailored to your timeline and AP Physics C: E&M goals.
4 / 8 / 12 weeksFlashcards
Review key formulas, laws, and concepts for every AP Physics C: E&M unit.
Formulas · Laws · ConceptsWhat You'll Master
Unit 1: Electrostatics
- Charge & Coulomb's Law
- Electric Fields
- Gauss's Law
- Electric Potential
Unit 2: Conductors, Capacitors, Dielectrics
- Conductors & Charge Distribution
- Capacitance
- Energy in Capacitors
- Dielectrics
Unit 3: Electric Circuits
- Current & Resistance
- DC Circuits (Kirchhoff's Laws)
- RC Circuits
- Power & Energy
Unit 4: Magnetic Fields
- Magnetic Forces on Charges & Wires
- Biot-Savart Law
- Ampère's Law
- Magnetic Flux
Unit 5: Electromagnetism
- Faraday's Law
- Lenz's Law
- Inductance & LR Circuits
- Maxwell's Equations
About the AP Physics C: E&M Exam
Format
- • Section I: 40 MCQs in 80 minutes
- • Section II: 4 FRQs in 100 minutes
- • Calculus-based
- • Total exam time: 3 hours
- • Graphing calculator allowed
Scoring
- • Score range: 1–5
- • 5 = Extremely well qualified
- • Typically taken after Mechanics
- • No penalty for guessing
- • Most colleges accept 4+