1 Flashcards
outermost electron orbital shell
valence shell
some materials have loosely bound electrons here
conductors
materials (ie - atoms) that pass electrons more easily than others
insulators
do not have free electrons
cannot pass electrons between other atoms
circuit
route along which electrons can flow
voltage
pushing force of electrons within a circuit
like pressure in a water pipe
Volt
joule per coulomb
amount of work per group of flowing electrons
current
the flow of electrons past a single point in a circuit within a set amount of time
measured in Amps (Amperes)
1 Amp = 1 Coulomb
6 quintillion electrons per second
resistance
restriction to the flow of electrons
measured in Ohms
longer thinner wires provide more resistance
resistors
restrict flow of current to protect electrical components
how does resistance occur
flowing electrons collide with atoms
results in heat and light energy
inductor
current passing through a coiled wire
intensifies the magnetic field generated when current passes through a wire
increasing strength of an inductor
wrapping coil around an iron core
increasing coil turns
increase current
electromagnetic induction
current/voltage induced when a magnetic field passes through a coil of wire
transformers
using electromagnetic induction, induce voltage into a second coil
capacitor
forces negative/positive charges to separate across two plates
causes a buildup of electrons within an electric field