| A | B |
|---|
| Electron Theory | The accepted theory of electronics that states that electricity flows from positive to negative. |
| Negative | An area with a surplus of electrons. |
| Positive | An area with a shortage of electrons. |
| Matter | Any substance that makes up anything that occupies space, has mass (weight), and is perceptible to the senses. |
| Molecule | The smallest portion that matter may be divided into and still retain all of its properties. |
| Atom | A tiny particle of matter made up of electrons, protons, and neutrons. The electrons orbit around the center (neucleus), made up of protons and neutrons. Combinations of atoms make up molecules |
| Elements | Atoms that exist in a pure state, uncombined with other kinds of atoms. |
| Electron | A negatively charged particle that makes up part of the atom. |
| Proton | A positively charged particle that ia part of the atom. |
| Neutron | A particle of an atom that has a neutral charge. Forms the central core of an atom along with protons. |
| Bound Electrons | Electrons that move in the inner orbits of an atom and are difficult to force from their orbits. |
| Free Electrons | Electrons that move in the outer orbits of an atom and are readily moved from their orbits. |
| Current | The movement of free electrons in a conductor. |
| Conductor | Any material that can form a path for electrical current. |
| Ampere | The unit of measurement for the flow of electrical current. |
| Direct Current | Electric current that flows steadily in one direction only. |
| Alternating Current | An electrical current that moves in one direction and then the other. |
| Voltage | The electrical pressure differential that causes current to flow. |
| Electromotive Force | Another way of describing "voltage." |
| Volt | Unit of measurement of electrical pressure or force that will move a current of one ampere through a resistance of one ohm. |
| Resistance | The measure of opposition to electrical flow in a circuit. |
| Ohms | Unit of measurement for the resistance to the flow of electric current in a given unit or circuit |
| Ammeter | Instrument used to measure the flow of electrical current in a circuit in amperes. Normally connected in series in a circuit. |
| Ohmmeter | An electrical instrument used to measure the amount of resistance in a given unit or circuit. |
| Multimeter | An electrical test meter that can be used to test for voltage, current, or resistence. |
| Insulator | Any material that resists the flow of electrons, heat, or noise. |
| Electrical Circuit | Consists of a power source, a unit to be operated, and the necessary wiring to provide a path for electron flow. |
| Complete Circuit | A circuit in which all of the components and wiring are electrically connected. |
| Series Circuit | A circuit with only one path for the current to flow. |
| Voltage Drop | A lowering of circuit voltage due to excessive lengths of wire, undersize wire, or through a resistence. |
| Parallel circuit | An electrical circuit that has two or more resistence units wired so that current can flow through them at the same time. |
| Series-Parallel Circuit | A circuit in which a series and parallel circuits are combined. |
| Ground | The terminal of the battery connected to the vehicle's frame. |
| Ohm's Law (Induction) | Amperes equal volts divided by ohms. |
| Magnetism | Invisible lines of force that attract ferrous metals |
| Chip | Another name for an "Integrated Chip." |
| Magnetic Poles | The "names" given to the opposite ends of a magnetized object. |
| Induced | When an electric current is created in a wire by using a bar magnet to create a mag. fld. |
| Electromagnet | A magnet produced by placing a wire coil around a steel/iron bar. when current flows through the wire, the bar's magnetized |
| Semiconductor | A substance (like silicon) that acts as a conductor or insulator depending on its application |
| Diode | A semiconducto device that allows current flow in one direction but resists it in the other. |
| Zener Diode | A diode that serves as a rectifier allowing current to flow in one direction only. |
| Power Transister | Transistors which are designed to carry heavy current loads |
| Integrated Circuit | A single chip of semiconductor material which contains various electrical components in miniaturized form. |
| Ohm's Law (Resistance:Math) | R = E / I |
| Ohm,s Law (Induction:Math) | I = E /R |
| Magnetic Lines of Force | The invisible force involved in magnetism that can be revealed by placing a magnet under a surface containing fine metal filings. |
| Ohm's Law (Electromotive Force) | Volts equals amperes multiplied by ohms. |
| Ohm's Law (EMF:Math) | E = I * R |
| Ohm's Law (Resistance) | Ohms equals volts divided by amperes. |
| Rectifier | A diode that converts alt. current into dir. current. |
| Transister | A solid state electronic switching device operated by very low currents but can carry heavy current. |
