Magnetism
Original source: Magnets and Magnetic Fields · Charges in Magnetic Fields · Current Carrying Wires in Magnetic Fields
Original author draft. Original wording and recorded answer states are preserved without claiming reviewed scientific correctness or AP alignment.
Physics 2 original textbook · Chapter 5
Chapter 1
Magnetism
Archived planning comments need these corrections: magnetic-field units are tesla or gauss; the Bohr magneton measures magnetic moment (A·m²). The magnetic field of a straight wire varies with distance and direction, so a generic charge trajectory is not a circle; an explicit geometry is required.