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Electrical Review

PreE review of electrical topics

AB
VoltageElectrical forec or pressure. Potential Difference
CurrentRate of electrical flow, measured in amperes
ResistanceOpposition to current flow
Inductioncharging a magnetic field in one circuit infduces boltage in a near by circuit
Circuitconductor, load, power source
Ohm's LawRelationship between voltage, resistance and current
Lenx's LawAn induced EMF generates a current that induces a counter magnetci field that oppose the magnetic field generating the current
TransformerComponent that transfers electrical energy from one point to another by magnetic action
Seriescircuit with only one path for current flow
Parallelcircuit with multiple paths for current flow
cathodenegative electrode
anodepositive electrode
electrolytefluid or paste that reacts with electrodes in a battery
Coulomb6.25 x 10^18 electons: a way to count a large number of electron charges
Alternating Currentcurrent that switches dierection in its response to a change in voltage polarity
Direct Currentcirrent that only flows in one direction
Wattmeasure of electrical power
Henrymeasure of electrical inductance
Electromagnetdevice that behaves as a magnet omly when external electrical power is applied to it
Horsepower746 watts


Bollman Technical Education Center
Thornton, CO

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