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EE302 Chapter 1

# EE302 Chapter 1 - Basic Concepts Chapter 1 Learning...

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Basic Concepts Chapter 1

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Learning Objectives Charge Current and Voltage Energy and Power Ideal basic circuit element Passive sign convention
Charge Fundamental electric quantity Unit: Coulomb (C) Charge of an electron: q e = -1.602 x 10 -19 C Charge of a proton: -q e = +1.602 x 10 -19 C It takes many, many electrons to produce a meaningful amount of electric current. How many electrons in one coulomb of charge? 1/1.602 x 10^19 = 6.24 x 10^18

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Charge is conserved. This is based on conservation of matter . Electrons and protons are neither be created nor destroyed in an electric circuit. They can only be transferred.
Current Current (i) is the rate at which charge is passing through an area i = q/ t where i = the current in Amperes q = the charge in Coulombs t = the time in seconds 1 Ampere = 1 Coulomb/second 1 Ampere = 6,240,000,000,000,000,000 electrons per sec (6.24 x 10 18 )

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Current is a Signed Quantity In electrical engineering, the positive direction of current flow is that of positive charges.
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EE302 Chapter 1 - Basic Concepts Chapter 1 Learning...

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