Create an account
The interaction between electric charges. THE MOVEMENT OF ELECTRONS CAUSED BY UNEQUAL AMOUNTS OF PROTONS AND ELECTRONS. THE MOVEMENT OF ELECTRONS.
*A buildup of charges on an object
*Can be done by running and transferring protons or electrons to another object and creating a charge.
*Build up of charges, discharges, and releases electrons
*Discharges can be small
*Example is static cling--built up charges have a charge and cling to other objects
The loss of static electricity as electric charges transfer from one object to another
*The difference in electric potential energy between two places in a circuit
*Amount of force to push or move an electric current
*Measured in volt (V)
*Voltage source-a device to push an electric source
*The continuous flow of electric charges through a material
*Rate which charges pass through a given point
*Takes path of least resistance, measured in Amps
*Example is an electrical device
*The law that states that resistance is equal to voltage divided by current
*Resistance=voltage (v)/current (amps or A)
**Increased voltage does not affect the resistance because if you double voltage, the current will double
*The measurement of how difficult it is for charges to flow through a material
*The greater resistance, the less current
*Measured in Ohm
*An electric charge with a single path-only one path for current to travel
*Any break causes bulb to go out
*An electrical circuit with multiple paths-has more than one path for current to travel
*If breaks doesn't mean won't work
*A material where charges can easily flow
*Contain loosely bonded electrons that carry the charge and create an electric charge
*The unit for the rate of current.
*The number of amps describes the amount of charge flowing past a given point each second
*Current consisting of charges that flow in only one direction in a circuit
*Known as DC current
*Examples are battery and motor
*Current that can flow in both directions
*Current consisting of charges that move back and forth in a current
*Known as AC
*Material where charges cannot easily flow
*Electrons bound tightly to atoms and do not move easily
*Used to stop the flow of charges
Ways to get an electric charge
1)Friction--the transfer of charge from one object to another by rubbing; electrons move from one object to another when rubbing
2)Conduction-The transfer of charge when electrons move from a charged object to another object by direct contact; objects touch another and electrons transfer; electrons transfer to the positive charged object
3)Induction-The transfer of electrons from one part of an object to another part, caused by the electric field of another object, without the two objects touching; electric field attracts or repels electrons
Factors that determine resistance
1) Composition of Material used
Insulators-don't let electrons flow. Higher reistance so charges don't move easily so less current
Conductors-electrons flow. Lower resistance so charges move easily so more current
2) Length of Materials
Longer-more resistance so less current
Shorter-less resistance so more current
Thinner-more resistance so less current
Thicker-less resistance so more current
Hotter or higher temp-more resistance so less current
Cooler or lower temperature-less resistance so more current
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together