Magnetic forces on moving charges and currents, and the fields that currents make.
Magnetic Fields & Forces Charged Particles in E and B Fields The Hall Effect DC Motors & Generators Two Magnets with Unequal-and-Opposite Torques The Magnet in an MRI Scanner A Mass Spectrometer: Separating Isotopes Floating a Wire on a Magnetic Field Magnetic Force on a Current-Carrying Wire Measuring a Magnetic Field Magnetic Force on a Semicircular Wire Negative Charge Near a Magnet Magnetic Force on a Proton Magnetic Force on Ions During a Nerve Pulse Electron's Path in a Uniform Magnetic Field Stopping Charged Particles A Helical Path Velocity Selector: Crossed E and B Torque on a Coil Magnetic Moment of a Hydrogen Atom Drift Velocity Using the Hall Effect Magnetic Fields of Currents: Biot–Savart & Ampère Calculation of B Near a Wire Magnetic Field Midway Between Two Currents Magnetic Field Due to Four Wires Force Between Two Current-Carrying Wires Field Inside and Outside a Wire Coaxial Cable A Nice Use for Ampère's Law Field Inside a Solenoid Toroid B Due to a Straight Wire (Biot–Savart) Current Loop B Due to a Wire Segment Magnetic Materials: Dia-, Para- & Ferromagnetism