# Shared Flashcard Set

## Details

DC 1
Direct Current 1
34
Other
01/05/2013

Term
 [image]
Definition
 Resistance  ohms
Term
 Current
Definition
 Directed flow of chrge through a conductor
Term
 Voltage current) through a circuit
Definition
 Difference of potetial that can generate a directed flow of charge 1 Volt = 1 Joule/Coulomb1V = 1 J/C
Term
 Resistance
Definition
 opposition to current that is provided by the cunductor
Term
 Current Calculation
Definition
 I(current)=Q(amount of charge)/t(time in seconds required for the charge (Q) to pass)
Term
 Coulomb (C)
Definition
 Basic unit of charge.6.25 X 10^18 electrons
Term
 Ampere (A)
Definition
 one coulomb of charge passes a point in one second.
Term
 Electron Flow Approach
Definition
 Flow of charge from negative to positive
Term
 Conventional flow approach
Definition
 Flow of charge from positive to negative.
Term
 Ohm
Definition
 Resistance (R)Amount of resistance that limits current to one amp when a one volt difference of potential is applied
Term
 Counductance
Definition
 G = 1/RMeasured in Siemens (S)Measure of the ease with which current will pass through a component or circuit.G = 1/RG (Conductance)R (Resistance)
Term
 1 Volt = ?
Definition
 Difference of potential required to generate 1 A of current through 1 Ohm of resistance.
Term
 1 Amp = ?
Definition
 Amount of current that is generated when 1 V difference of potential is applied across 1 Ohm of resistance.
Term
 3 Facotors of Resistance of a conductor
Definition
 Resistivity of material usedLength of material usedCrosss-sectional area of material
Term
 Equation of Resistance
Definition
 R = p 1/Ap is resistivity of materiall is length of conductorA is cross sectional area of conductor
Term
 What is positive temp coefficient?
Definition
 Rating that indicates the resistance of a given material increases when temp increases
Term
 What is negative temp coefficient?
Definition
 Rating that indicates the resistance of a given material decreases when temp increases.
Term
 Symbol "I"
Definition
 Amp (A)
Term
 Symbol E
Definition
 Volt (V)
Term
 Symbol V
Definition
 Volt
Term
 Symbol R
Definition
 Ohm (Omega)
Term
 Ohms Law
Definition
 E = I R
Term
 Pico
Definition
 ^-12 Trillionths p
Term
 Nano
Definition
 ^-9 Billionthsn
Term
 Micro
Definition
 ^-6 Millionthsu with the funny down thing
Term
 Milli
Definition
 ^-3 Thousandthsm
Term
 Kilo
Definition
 ^3 Thousandk
Term
 Mega
Definition
 ^6 MillionsM
Term
 Giga
Definition
 ^9 BillionG
Term
 Tera
Definition
 ^12 TrillionsT
Term
 Resistor
Definition
 Component that is used to limit the current through a circuit.
Term
 Inductor
Definition
 component that opposes any change in current.
Term
 Vacuum tube
Definition
 Component whose operation is based on the flow of charge through a vacuum
Term
 IC's
Definition
 Integrated Circuits.Semiconductor componets that contain entire groups of components or ciruits housed in a single package.
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