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= Chapter 2: Current and Voltage =

Current and voltage are two of the most common terms used in electronics.The movement of electrons is called current flow. The current flow is used in a electrical circuit. Some elements are well suited for current flow, some are not. A force must be applied to the electrons to begain their movement. The force that creates current flow is called electromotive force, or voltage. A potential can exist between two charges and this potential can move electrons, several different methods create this force.

Vocabulary:
Voltage - Driving force of current Current - The flow of electrons from one point to another Orbital Shells - Paths which electrons take to orbit an atom Valence Shell - The outtermost orbital shell, electrons in this shell are called valence electrons Conductor - Substances with a large amount of free electrons that Semiconductor - Substances that arent good conductors, but arent good insulators Insulators - Material that doesnt posses many free electrons EMF(Electromotive force)- interchangable with voltage www.wikipedia.org

By: Josh,Craig,Rocky