Magnetic Field and Forces: Coil and Gauss Law

This lecture covers topics related to magnetic field lines, magnetic flux, magnetic forces between parallel wires, galvanometers, and direct current motors. It explains the concept of coil and magnetic Gauss law, the Biot-Savart law, Ampere's law, and the Hall effect. The instructor discusses the behavior of magnetic fields inside coils, the arrangement of iron filings in magnetic fields, and the forces exerted on wires by magnetic fields. Additionally, the lecture explores the Hall effect, magnetic forces between parallel wires, and the operation of galvanometers and DC motors.