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The Tian2 Study Library AP Edition · Tian2 Editorial Bureau
Volume I · MMXXVI AP Physics C: Electricity and Magnetism
Library Catalogue AP Physics C: Electricity and Magnetism
⁂   Science · AP Exam

Physics C:
Electricity and
Magnetism Study Library.

Expert-authored worked FRQ solutions, original practice questions, and unit study guides — built from official College Board sources and original Tian2 content.

6 units standard tracks 180 minutes
Total Time 180 minutes
MCQ 40 multiple-choice questions
FRQ 4 free-response questions
Score Scale 1-5 72.9% scored 3+
Curriculum

Study by unit.

8.
Electric Charges, Fields, and Gauss's Law
Coulomb's Law (scalar and vector forms, superposition of forces) · Electric field from point charges and superposition principle · Electric field from continuous charge distributions (ring, disk, infinite line, infinite plane) via integration · Electric flux (Φ = ∫E·dA) · Gauss's Law (∮E·dA = Q_enc/ε₀) and selection of Gaussian surfaces · Applying Gauss's Law for spherical, cylindrical, and planar symmetry · Charge distributions on conductors (surface charge, interior field = 0, induced charges) · Conductors with cavities and shielding
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9.
Electric Potential
Electric potential energy (U = qV) and work done by the electric force · Electric potential from a point charge (V = kq/r) and superposition of potentials · Electric potential from continuous charge distributions via integration · Potential difference (ΔV) and its relationship to work · Equipotential surfaces and their geometric relationship to field lines · Relationship between electric field and potential: E = –dV/dr (1D) and E = –∇V (3D) · Energy conservation in electric fields (K + U = constant) · Electric potential inside and outside conductors (V = constant inside conductor)
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10.
Conductors and Capacitors
Properties of conductors in electrostatic equilibrium (E = 0 inside, field perpendicular to surface, charge on surface) · Capacitance definition: C = Q/V · Parallel-plate capacitor: C = ε₀A/d, derived from Gauss's Law and potential difference · Cylindrical and spherical capacitor derivations using Gauss's Law · Dielectric materials: dielectric constant κ, effect on C, E, and V at constant charge vs. constant voltage · Energy stored in a capacitor: U = Q²/2C = CV²/2 = QV/2 · Capacitors in series and parallel: equivalent capacitance · Cavity shielding: field and potential inside a conductor enclosure
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11.
Electric Circuits
Current density, drift velocity, and resistivity (ρ) · Resistance: R = ρL/A; Ohm's Law: V = IR · Power dissipation: P = IV = I²R = V²/R · EMF sources, terminal voltage, and internal resistance · Kirchhoff's Voltage Law (KVL) and Kirchhoff's Current Law (KCL) · Series and parallel resistor networks: equivalent resistance · RC circuits: charging q(t) = Q_max(1 – e^(–t/RC)) and discharging q(t) = Q₀e^(–t/RC); time constant τ = RC · RL circuits: current build-up and decay; time constant τ = L/R · Initial and final conditions: capacitor as wire (t = 0, uncharged) or open circuit (t → ∞); inductor as open circuit (t = 0, no current) or wire (t → ∞)
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12.
Magnetic Fields and Electromagnetism
Magnetic force on a moving charge: F = qv × B (direction via right-hand rule) · Charged particle motion in a uniform magnetic field: circular and helical trajectories · Magnetic force on a current-carrying wire: F = IL × B · Torque on a magnetic dipole in a field: τ = m × B; magnetic dipole moment · Biot-Savart Law: dB = (μ₀/4π)(I dL × r̂ / r²) — integration for straight wire segment, circular loop, infinite wire, solenoid · Ampère's Law: ∮B · dL = μ₀I_enc — application for infinite wire, toroid, solenoid (selection and evaluation of Amperian loops) · Hall effect: Hall voltage and carrier sign determination · Magnetic materials (qualitative: ferromagnetic, paramagnetic, diamagnetic)
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13.
Electromagnetic Induction
Magnetic flux: Φ_B = ∫B · dA · Faraday's Law: EMF = –dΦ_B/dt · Lenz's Law: direction of induced current opposes the change in flux · Motional EMF: EMF = BLv (and generalisation to non-uniform fields via integration) · Induced electric fields from time-varying magnetic flux (∮E · dL = –dΦ_B/dt) · Self-inductance: L = NΦ/I; induced EMF = –L(dI/dt) · Mutual inductance (qualitative and quantitative definition) · Energy stored in an inductor: U = LI²/2 · LR circuit time-domain behavior: I(t) = (EMF/R)(1 – e^(–Rt/L)); time constant τ = L/R · LC circuit oscillations: analogy to SHM, angular frequency ω = 1/√(LC) · Maxwell's equations in integral form: Gauss's Law (E and B), Ampère-Maxwell Law (with displacement current), Faraday's Law · Displacement current concept: ∂Φ_E/∂t term in Ampère-Maxwell Law
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Our worked solutions and practice questions are original instructional content created by Tian2 AP. They are aligned to the concepts and skills described in College Board’s Course and Exam Description and are not reproductions of, or affiliated with, College Board’s official materials.