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phys ch7

QuestionAnswer
Current is almost always the flow of electrons
A car battery is an example of wet cell
Ohm's law states that the current equals_______divded by resistance. voltage difference
Electrical energy is equal to_______ x time. power
A power ratinng lists the _____ required to operate an appliance. watts
One thousand watts of power used in 60 minutes is _______. 1 kilowatt-hour
A closed path through which electrons can flow is_______? a circuit
Thin wires have a _______ resistance to electron flow than do thicker wires. greater
A fuse will melt if the ______ in a circuit becomes too high. current
A dry cell is used in a flashlight to convert ______ to light. electrical energy
A current has 2 or more branches in a _______. parallel
The tendency for a material to oppose the flow of electrons is called ______. resistance
Current is measured in ________. amperes
Electrical power is not equal to ______ x voltage difference. Ohms
Current has only one loop to flow through in a ________. series circuit
___________ allows electrons to move through it easily. conductor
Accumulation of electric charges on an object. static electricity
This does not allow electricity to move through it easily. insulator
Surrounds electric charge and exerts force on the charges. electric field
Rate at which electrical energy is changed to another engery form. electric power
Flow of electrons through a conductor. electric current
Metal rod that directs lighttning to Earth. lightning rod
flashlight dry cell
The unit of electric energy is the kilowatt- hour
Transferring charge by touching is charging by______. contact
Created by: stacyyjenny
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