12.01 - Magnetic fields
12.02 - 12.04 - Motor effect
12.05 - 12.06 - Magetic force on charged particles
12.07 - 12.08 - Particle accelerators
12.09 - Magnetic flux linkage
12.10 - 12.15 - Electromagnetic Induction
12.16 - 12.17 - Alternating current
12.18 - 12.20 - Transformers