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AP Physics C: Electricity and Magnetism
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- AP Physics C: Electricity and Magnetism — Question index
- 8.1 Electric Charge and Electric Force
- 8.2 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
- 9.1 Electric Potential Energy
- 9.2 Electric Potential
- 9.3 Conservation of Electric Energy
- 10.1 Electrostatics with Conductors
- 10.2 Redistribution of Charge Between Conductors
- 10.3 Capacitors
- 10.4 Dielectrics
- 11.1 Electric Current
- 11.2 Electric 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
- 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
- 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)
- 8.1 Electric Charge and Electric Force
- 8.2 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
- 9.1 Electric Potential Energy
- 9.2 Electric Potential
- 9.3 Conservation of Electric Energy
- 10.1 Electrostatics with Conductors
- 10.2 Redistribution of Charge Between Conductors
- 10.3 Capacitors
- 10.4 Dielectrics
- 11.1 Electric Current
- 11.2 Electric 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
- 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
- 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)
- Complete pack — exercise sheets + past papers
- 8 Electric Charges, Fields, and Gauss's Law — Part 1
- 8 Electric Charges, Fields, and Gauss's Law — Part 2
- 9 Electric Potential — Part 1
- 9 Electric Potential — Part 2
- 10 Conductors and Capacitors — Part 1
- 10 Conductors and Capacitors — Part 2
- 11 Electric Circuits — Part 1
- 11 Electric Circuits — Part 2
- 12 Magnetic Fields and Electromagnetism — Part 1
- 12 Magnetic Fields and Electromagnetism — Part 2
- 13 Electromagnetic Induction — Part 1
- 13 Electromagnetic Induction — Part 2
How to use these papers
Sort the released questions by which law they hinge on — Gauss, Ampère, Faraday — and work them in those groups rather than paper by paper. The difficulty in this course is choosing the surface or loop, and choosing well is a pattern you learn by seeing many cases together.
Fix a sign convention for flux and induced current and apply it identically every time. Most lost marks in the induction questions are sign errors, and they come from deciding the convention afresh on each question.
Check your answers by limiting case: let a distance go to infinity or a charge go to zero and see whether the expression still makes sense. The rubric does not award it, but it catches errors before the answer is committed.