Electric Theory Flashcards
Basic electron theory
__________ is the flow of electrons
Electricity
The 3 major parts of an atom are the ____________________
electron, proton and neutron
____________have a negative charge, ____________ have a positive charge, and
____________have no charge
Electrons have a negative charge, protons have a positive charge, and
neutrons have no charge.
The _________ of an atom contains protons and neutrons
nucleus
LAW OF CHARGES
Opposites attract and likes repel
__________ is proportional to mass and speed
Centrifugal force
The attraction between ________ and ___________ keeps an electron from flying into space
protons and electrons
_______________ are located on the outer shell of the atom
Valence electrons
________ are materials that _________ electricty easily.
Conductors and conduct
The best conductors have __ or ___ valence electrons
one or two
Copper is a good _________
Conductor
___________ are materials that do NOT conduct electricity easily.
Insulators
Insulators generally have ___ or ____ electrons in the valence shell
7 or 8
_______ can be used to knock electrons out of orbit
electron impact
A Coulomb is _________th electrons
6.25 x 10^18th
Ampere (A) = _________ per second past a given point
one coulomb
EMF
Voltage is Electromotive Force (EMF), which is why E means volt
Amperage letter symbol
Amperage is Intensity, which is why I means Amperage
_____________ may be thought of as electrical pressure
Voltage
Resistance to the flow of electricity is measured in __________ (the Greek Omega)
ohms
Wattage letter symbol?
Wattage (P) is a measurement of electric power
________ It takes 1 volt to push 1 amp though 1 ohm, such that if you
know any 2 values, you can compute the third
Ohm’s Law
