Night before
Physics C: E&M cram sheet
Every unit on AP Physics C: Electricity and Magnetism, with the multiple-choice weighting from the CED and the topics the framework actually names. Then the exam format and the 2025 score facts, sourced from College Board.
How the exam is scored
- Length: 3 hours.
- 42 multiple-choice questions, 85 minutes, 50% of exam score.
- 4 free-response questions, 95 minutes, 50% of exam score: Mathematical Routines, Translation Between Representations, Experimental Design and Analysis, Qualitative/Quantitative Translation.
- A four-function, scientific, or graphing calculator is allowed on both sections of the exam.
In 2025, 72.8% of 29,910 students scored a 3 or higher, mean 3.37 (official score distributions). That is the published distribution. It is not a personal 1 to 5 predictor.
Units and MCQ weight
Unit 8: Electric Charges, Fields, and Gauss's Law
15-25% of the multiple-choice section
- 8.1 Electric Charge and Electric Force
- 8.2 Conservation of Electric Charge and the Process of Charging
- 8.3 Electric Fields
- 8.4 Electric Fields of Charge Distributions
- 8.5 Electric Flux
- 8.6 Gauss's Law
Unit 9: Electric Potential
10-20% of the multiple-choice section
- 9.1 Electric Potential Energy
- 9.2 Electric Potential
- 9.3 Conservation of Electric Energy
Unit 10: Conductors and Capacitors
10-15% of the multiple-choice section
- 10.1 Electrostatics with Conductors
- 10.2 Redistribution of Charge between Conductors
- 10.3 Capacitors
- 10.4 Dielectrics
Unit 11: Electric Circuits
15-25% of the multiple-choice section
- 11.1 Electric Current
- 11.2 Simple Circuits
- 11.3 Resistance, Resistivity, and Ohm's Law
- 11.4 Electric Power
- 11.5 Compound Direct Current Circuits
- 11.6 Kirchhoff's Loop Rule
- 11.7 Kirchhoff's Junction Rule
- 11.8 Resistor Capacitor (RC) Circuits
Unit 12: Magnetic Fields and Electromagnetism
10-20% of the multiple-choice section
- 12.1 Magnetic Fields
- 12.2 Magnetism and Moving Charges
- 12.3 Magnetic Fields of Current-Carrying Wires and the Biot-Savart Law
- 12.4 Ampère's Law
Unit 13: Electromagnetic Induction
10-20% of the multiple-choice section
- 13.1 Magnetic Flux
- 13.2 Electromagnetic Induction
- 13.3 Induced Currents and Magnetic Forces
- 13.4 Inductance
- 13.5 Circuits with Resistors and Inductors (LR Circuits)
- 13.6 Circuits with Capacitors and Inductors (LC Circuits)
Equation sheet: the Physics C: E&M sheet. Projectile, step by step: walk through a launch. Course hub: AP Physics C: Electricity and Magnetism.