electricity quiz review
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conductor
conducts electricity and head (gold is best)
insulator
bad conductor of electricity and heat (air and non-metals)
direct current
DC: electrons move in one direction (power sources: battery, fuel source, solar panels)
alternating current
AC: electrons move in different directions (power sources: AC generator/alternator)
DC
direct current: electrons move in one direction (power sources: battery, solar panels, fuel cells)
AC
alternating current: electrons move in different directions (power sources: AC generator/alternator)
AC
alternating current: electrons move in different directions (power sources: AC generator/alternator)
sources of DC power
battery, solar panels, fuel cells
sources of AC power
AC generator/alternator
frequency of AC power
60Hz
Electromotive force
(EMF) pushes electrons in a circuit (unit: volts or V)
Current
(I) The current at which electrons go (unit: Amps or A)
Resistance
(R) the resistance to a flow of electrons (unit: Ohms or weird writing thing)
Ohm’s Law
V=IR
Electrical power
P=VI or P=V^2/R
Watts
unit of power (W)
Kilowatts
1KW=1000W
Kilowatts
1KW=1000W
Tesla
invented AC
Edison
invented light bulb and DC
Circuits
Series of Parallel
Series circuit
electrons move on one path
Parallel circuit
electrons split or branch
circuit symbols
battery, AC power source, switch, electrical component