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Directed flow of chrge through a conductor 


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Voltage current) through a circuit 

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Difference of potetial that can generate a directed flow of charge
1 Volt = 1 Joule/Coulomb 1V = 1 J/C 


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opposition to current that is provided by the cunductor 


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I(current)=Q(amount of charge)/t(time in seconds required for the charge (Q) to pass) 


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Basic unit of charge. 6.25 X 10^18 electrons 


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one coulomb of charge passes a point in one second. 


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Flow of charge from negative to positive 


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Conventional flow approach 

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Flow of charge from positive to negative. 


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Resistance (R) Amount of resistance that limits current to one amp when a one volt difference of potential is applied 


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G = 1/R Measured in Siemens (S)
Measure of the ease with which current will pass through a component or circuit.
G = 1/R G (Conductance) R (Resistance) 


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Difference of potential required to generate 1 A of current through 1 Ohm of resistance. 


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Amount of current that is generated when 1 V difference of potential is applied across 1 Ohm of resistance. 


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3 Facotors of Resistance of a conductor 

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Resistivity of material used Length of material used Crossssectional area of material 


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R = p 1/A
p is resistivity of material l is length of conductor A is cross sectional area of conductor 


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What is positive temp coefficient? 

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Rating that indicates the resistance of a given material increases when temp increases 


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What is negative temp coefficient? 

Definition
Rating that indicates the resistance of a given material decreases when temp increases. 


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^6 Millionths u with the funny down thing 


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Component that is used to limit the current through a circuit. 


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component that opposes any change in current. 


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Component whose operation is based on the flow of charge through a vacuum 


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Integrated Circuits. Semiconductor componets that contain entire groups of components or ciruits housed in a single package. 

