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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.

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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.

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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.

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What 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+

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