Physics Honors Vocabulary Chapters 20 and 21
Terms in this set (18)
The study of electric charges that can be collected and held in one place.
An atom whose positively charged nucleus exactly balances the negative charge of the surrounding electrons.
A material, such as glass, through which a charge will not move easily.
A material, such as copper, through which a charge will move easily.
The field that exists around any charged object; produces forces that can do work, transferring energy from the field to another charged object.
Electric Field Lines
Lines that provide a picture of an electric field, indicate the field's strength by the spacing between the lines, never cross, and are directed toward negative charges and away from positive charges.
Electric Potential Difference
The change in potential energy per unit charge in an electric field.
The unit equal to one joule per coulomb, 1 J/C.
The electric potential difference of zero between two or more positions in an electric field.
An electric device used to store charge that is made up of two conductors separated by an insulator.
The ratio of an object's stored charge to its electric potential difference.
A device that is used to detect electric charges and consists of a metal knob connected by a metal stem to two thin metal leaves.
Charging by Conduction
The process of charging a neutral object by touching it with a charged object.
Charging by Induction
the process of charging an object without touching it, which can be accomplished by bringing a charged object close to a neutral object, causing a separation of charges, then separating the object to be charged, trapping opposite but equal charges.
The process of removing excess charge by touching an object to earth.
States that the force between two charges varies directly with the product of their charge and inversely with the square of the distance between them.
The SI standard unit of charge; one of these, C, is the magnitude of the charge of 6.24e18 electrons or protons.
The magnitude of the charge of an electron.
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