Electrodynamics Flashcards
The study of electric charges in motion
Electrodynamics
Electrons flow from
abundance to deficiency
The ability to do work because of a separation of charges
Electric potential
Electric potential is measured in
volts
Current is measured in
amperes
Resistance is measured in
ohms
What is the flow of charged particles
electric current
Electrons flow in one direction
Direct current
Electrons oscillate back and forth
Alternating current
4 things resistance depends on
Material, Length, Cross Sectional Area, Temperature
The unit of measure for frequency
Hertz
a device that produces electrons through a chemical reaction
Battery
A device like a battery that stores and electrical charge
Capacitor
“one way valve” - only allows electrons to flow in one direction
Diode
a section of special wire that quickly melts if the current flow rises excessively
Fuse
If the current flow rises, what stops the flow of electricity?
Circuit breaker
a device designed to inhibit the flow of electrons
resistor
an adjustable form of a resistor
rheostat
a device that opens a circuit
switch
a device that can increase or decrease voltage
transformer
the process of connecting an electrical device to the earth via a conductor
grounding
What is an example of an insulator?
Wood
What is an example of a conductor?
Water
The electrical resistance of wire increases as the diameter
decreases
The unit of electric potential is the
volt
mAs is a unit of
electric current
The difference between DC and AC is
Direct current electrons flow in one direction
Normal household electric is
120V, 60Hz, single phase
