Module 4
1. Module 4
1.24. Module Glossary
Module 4—Magnetic and Electric Fields in Nature and Technology
Module Glossary
domain: the region of a material in which the magnetic fields of most of the atoms are aligned
electric current: the amount of charge, in coulombs, that passes a fixed point in a conductor in a one-second interval
The unit of current is the ampere, equivalent to one coulomb of charge passing a fixed point in a conductor in a one-second interval.
ferromagnetic material: a metal with adjacent atoms having electron movement that, taken together, form a small region with an intense magnetic field
generator effect or electromagnetic induction: the production of electrical current by the relative motion of a conductor in a magnetic field
Lenz’s law: the direction of a magnetically induced current is orientated such that it produces a magnetic field that opposes the motion causing it
magnetic field: a three-dimensional region of magnetic influence surrounding a magnet in which other magnets or magnetic substances are affected by magnetic forces
magnetic flux: the number of magnetic field lines passing through a given area perpendicular to the field
motor effect: the magnetic force produced when a current-carrying conductor is located in a perpendicular magnetic field
solenoid: an electromagnet that operates a mechanical device by using the magnetic field produced by a current-carrying conductor wrapped into a coil
tesla: a unit of magnetic field strength (T) defined as one 
or one 