Electricity Chapter 10
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Electricity Chapter 10
Electricity Glossary Terms
A form of energy that results from the interactions of charged particles such as electrons and protons.
Electric charge that remains static (doesn't move)/builds up.
Charging by Friction
Involves the transfer of electric charges by rubbing/friction.
E.g. socks on carpet or combing hair
Used to determine the kind of electric charge produces on each substance when two substances are rubbed together.
Refer to page 405 of the textbook for the table.
Substances high on the table lose electrons and are positively charged.
Substances low on the table hold onto electrons and are negatively charged.
The closer two substances are on the table the weaker the ability to transfer electrons will be.
A material in which particles cannot move freely between atoms.
Wood, rubber, PURE water.
A material in which particle can move freely between atoms.
Metals (copper, aluminium), NOT PURE (with dissolved minerals) water.
A material in which particles can move with some degree of freeness between atoms.
Ground has a very large number of charges.
Can make a charged object neutral by supplying or removing electrons.
Ground always remain neutral due to the number of electrons
A device that detects the presence of an electrical charge.
Pith ball electroscope
Metal leaf electroscope
Charging by Contact
Generating a charge on a neutral object by touching it with a charged object.
An object that gets charged by contact always gets the same charge as the object that charged it.
Positively charged objects will turn a neutral object positive.
The most that can happen to the first object is that it can turn neutral but that is unlikely.
Examples in notes if needed
Law of Electric Charges
Laws that describe how to objects interact electrically.
Also, a neutral object will attracted to a charged object.
The property of the space around a charged object,where the effect of its charge can be felt by other objects.
An electric field produces an electric force on any other objects that are in the field.Objects with greater net charges have stronger electric fields.
The greater the distance from the charged object the weaker the electric field on the object is.
Induces Charge Separation
The movement of electrons in a substance caused by the electric field of a nearby charge object, without direct contact between the substance and the object.
A positivity or negatively charged atom or group of atoms.
A metal sphere or point that is attached to the highest part of the building and is connected to the ground.
A type of cleaner that removes all the unwanted particles and liquid droplets from a flow of gas.
Van de Graaff Generator
A devices that accumulates very large charges.
A small device that measures and detects exposure to radiation.