AP Ch 19 - Electrostatics and Conductors. AP Ch 26 - Geometric Optics. AP Ch 20 - Voltage and Capacitors. AP Ch 21 - Circuits. AP Ch 22 - Magnetism from Electricity. AP Ch 23 - Electricity from Magnetism. AP Ch 24 - Alternating Currents and Phasors. AP Ch 25 - Electromagnetic Radiation Fundamentals. AP Ch 28 - Physical Optics and Diffraction!