Chapter 3 Electrical Quantities and Ohm's Law/Blue book
Power
ability to do work; in an electric circuit , is generally measured in watts
British thermal unit (BTU)
amount of heat necessary to change the temperature of one pound of water one degree Fahrenheit
Horsepower
common measure of power in which the base is established at 550 foot-pounds per second; in electrical quantities, 746 watts equals one horsepower
Complete unit
electric circuit that exists from the more negative to the more positive voltage
Resistance
element of an electric circuit that can limit the flow of current by producing heat
Electromotive force (EMF)
force known as voltage that pushes the electrons through an electric circuit
Grounding conductor
generally the bare or green wire used to establish low resistance path to the ground
Volt
measure of EMF often described as electrical pressure
Amp
measure of electric current defined as one coulomb per second
Joule
metric measure of power similar to the English measure watt
Conventional current flow theory
older theory stating that electric current flows from the more positive source to the more negative source
Neutral conductor
part of an electric circuit that is generally grounded
Watt
power measurement that describes the amount of electrical energy converted to some other form
Coulomb
quantity measure of electrons that equals 6.25x10 (18 power) electrons
Ohm's law
set of mathematical formulas developed by the German scientist Georg S. Ohm
Electron theory
theory stating that electricity flows from the more negative power source to the more positive power source
Impedance
total current limiting effect in an electric circuit; measured in ohms
ohm
unit of measure used to describe the resistance to the flow of electric current