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Ch. 7 cards

vocab words

QuestionAnswer
A car battery is an example of a? Wet Cell
Current has only one loop to flow through in a? Series Circuit
A current has two or more branches? Parallel Circuit
______'s law states that current equals voltage difference divided by the resistance Ohm's
thin wires have a _______ resistance to electron flow than do thicker wires. greater
_____ can open or close a circuit switch
a flashlight battery is an example of a? dry cell
the symbol V stands for? volts
the unti of electricty energy in wat? Kilowatt-Hour
Transferring charge by touching is charging by ________________ contact
allows electrons to move through it? conductor
does nopt allow electricity to flow throught it easily insulator
flow of electrons through a conductor electric current
metal rod that directs lighting to earth lighting rod
device that detects electric charges electroscope
does Mrs. Calvert rock? YES!!!!!!!!!!!
tendency of a material to oppose electron flow resistance
push that causes charges to move electric power
wat does walking across a carpet create? static electricity
according to the __________ charge can be transferred from object to object, but cannot be created or destroyed Law of Conservation of Charge
Circuit breakers and fuses prevent _________ current from flowing in a circuit excessive
resistance is the result of _________ colliding with atoms as current flows into a material electrons
charging a __________ by rubbing it on wood is an example of charging by contact ballon
__________ is a good conductor. tungsten
units use to measure the rate of electon flow amperes
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