CONCEPT MAP

The chapter closes with a single branching concept map titled "Magnetism and Magnetic effects of electric current", with two main branches growing out from the title. The "Bar Magnetics" branch fans out into Coulomb's law, the magnetic elements of the Earth's magnetism, properties of magnets, the axial-line and equatorial-line field formulas, torque, and potential energy, and separately into magnetic materials and the tangent galvanometer. The "Magnetic effects of electric current" branch fans out into the Biot-Savart law, Ampere's law, the magnetic field of a current-carrying conductor, the solenoid and the toroid, and separately into the Lorentz force, the cyclotron, torque on a current loop, and the moving coil galvanometer. Read left to ri …