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BEC%20SU100

# BEC%20SU100 - BEC 1 BASIC ELECTRICAL CONCEPTS The following...

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BEC BASIC ELECTRICAL CONCEPTS The following terms (in bold face type ) are the most commonly used in circuit analysis, and should be memorized. ELECTRIC CHARGE Positive charge is carried by protons. Negative charge is carried by electrons. Coulomb (C) --- unit of charge The combined charge of 6.241 X 10 18 electrons equals 1 C. ELECTRIC CURRENT ( I ) [analogy = ] 1 From Floyd Electronics Fundamentals

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BEC (by convention) Ampere (A) --- Unit of electric current Ampere = coulombs/second Direct Current (DC) flows only in one direction and usually refers to a constant current. Examples: Alternating Current (AC) changes in direction of flow and usually refers to a current that varies sinusoidally with time – however, there are other waveforms. Examples: Current Source - A circuit element that provides a specified current. ( ) [ Analogy = ] 2 Current (i) Time (t) Flow of Electrons Flow of Current + _ Current (i) Time (t)
BEC VOLTAGE (V or E - Electromotive Force) Electric potential. (Current flows from points of high voltage to low voltage.) [analog =

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