homework vocab review Flashcards
valence electrons
an electron in the shell farthest from the nucleus.
power
rate of doing work.
resistance
opposition to the flow of electrons in DC circuit.
voltage
electrical pressure.
Ohm
unit of opposition to current flow.
reluctance
opposition to magnetic lines of flux.
static
not moving.
magnetic domain
magnetic region.
ohms law
defines proportional relationship among voltage, current and resistance.
joule
metric unit of energy.
energy
power x time.
semiconductor
a material with 4 valence electrons.
ampere
unit of electrical flow rate.
current
flow of electrons
impedence
opposition to flow of electrons in an AC circuit.
conductor
a material with few valence electrons.
coulomb
6.25 x 10 to the 18th power
ampere-turn
unit of electromagnetic strength
flux
total magnetic lines of flux
atom
the smallest particle that exhibits the properties of an element.
