| Term | Definition |
|---|
| AC Current | Current periodically reverses direction. |
| Ampere | (A) The unit of electric charge, which is the basic unit of measurement for current flow in an electric circuit. |
| Atom | The smallest particle to which an element can be reduced and still retain its characteristics. |
| Closed circuit | A circuit that forms a complete path so that electric current can flow through it |
| Conductor | A material that allows electric current to flow through it easily. |
| Control | The part of an electric system that affects what the system does; a switch to turn on and turn off a light is a type of ____________. |
| Conventional current flow | Current flow assumed to be in a direction from high charge concentration (+) to low charge concentration (-). |
| Coulomb | (C) A unit of electric charge that represents a large number of electrons. ~ 6.28 x 1018 electrons |
| Current | The movement of electric charge; the flow of electrons through an electric circuit. |
| DC Current | Current flows in one direction only. |
| Electromotive force | (EMF) The pressure, or force, that causes electric current to flow. |
| Electron | An atomic particle said to have a negative (-) electric charge; electrons are the means by which the transfer of electric energy takes place. |
| Electron current flow | Current flow assumed to be in the direction of electron movement from a negative (-) potential to a positive (+) potential. |
| Electrostatic field | The space around a charged material in which the influence of the electric charge is experienced. |
| Element | The basic materials that make up all other materials; they exist by themselves (such as copper, hydrogen, carbon) or in combination with other elements (water is a combination of the elements hydrogen and oxygen). |
| Energy | The capacity to do work. |
| Free electrons | Electrons located in the outer orbit of an atom that are easily removed and result in flow of electric current. |
| Indicator | The part of an electric system that shows whether the system is on or off or that a specific quantity is present. |
| Insulator | A material that offers a high resistance to electric current flow. |
| Kinetic energy | Energy that exists because of movement. |
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