Electricity Barrett-2015

review card for test on electricity for 2014-2015 school year.
STUDY
PLAY
voltage
Chemical potential energy.
direct current
Current flowing in one direction.
direct current
the type of current supplied by a battery.
alternating current
Current that changes direction.
alternating current
the type of current supplied by wall outlets.
amperes
Unit of current.
amperes
symbolized by A.
resistance
electrical friction found in a circuit.
current
The flow of electricity through a circuit.
Ohm's Law
I=V/R
parallel
Circuit type where when one bulb goes out, the others remain on.
parallel
Circuit type found in your home.
series
Circuit type where, if one bulb goes out, the remaining bulbs in the circuit also go out.
ammeter
A device used to measure the current flow through a circuit.
voltmeter
A device that measures the potential energy difference across two points in a circuit. (measures voltage)
conductor
Any material that allows for the flow of electrons.
insulator
Any material that blocks the flow of electrons.
Power
The amount of energy a charge carries in a given amount of time.
Power
I*V (Current multiplied by Voltage)
kilowatt
1,000 watts
kilowatt-hour
Unit of energy used by the electric company to measure your electricity use. It's equal to 1,000 watts being used for one hour.
Ohm
Unit for resistance.
Ohm
symbolized by Ω.
watt
symbolized by W.
volt
unit for voltage.
total resistance in a series circuit
R1+R2+R3......
total resistance in a parallel circuit
(R1R2))/(R1+R2)