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- A form of energy that results from the interaction of charged particles, such as electrons or protons
- e.g. (forms of electricity) Lightning, batteries
Static Charge (Static
- An electric charge that tends to stay on the surface of an object rather than flowing away quickly
- Refer to charging by friction.
Charging By Friction
- A process in which objects made from different materials rub against each other, producing a new static charge on each
- e.g. Clothes in a dryer rubbing, rubbing balloon on sweater
A list of materials that have been arranged according to their ability to hold on to electrons
- A material in which electrons cannot move easily from one atom to another
- e.g. glass, wood, rubber
- A material in which electrons can move easily between atoms
- e.g. copper, silver, nickel (metals)
- A material in which electrons can move fairly well between atoms.
- e.g. silicon, diamond
- An object that can supply a very large number of electrons to, or can remove a very large number of electrons from, a charged object, thus neutralizing the object
- e.g. human fingers
- A device for detecting the presence of an electric charge
- e.g. Metal leaf electroscope, pith ball electroscope
Charging By Contact
- Generating a charge on a neutral object by touching it with a charged object
- e.g. Contact between a negatively charged rod, and a neutral pith ball
Law of Electric Charges
- Laws that describe how two objects interact electrically when one or both are charged
- e.g. Like charges repel, Opposite charges attract, Charged and neutral objects attract each other
- A property of the space around a changed object, where the effect of its charge can be felt by other objects.
- Objects with greater net charges have stronger electric fields
Induced Charge Seperation
The movement of electrons in a substance, caused by the electric field of a nearby charged object, without direct contact between the substance and the object
A charged atom or group of atoms
- A metal sphere or point, attached to the highest part of a building and connected to the ground
- Thick, insulated copper wire connects the lightning rod to a metal plate or bare metal cable in the ground.
- A type of cleaner that removes unwanted particles and liquid droplets from a flow of gas
- Reduces pollution and smokestacks
Van de Graaff Generator
- A device that accumulates very large charges
A small device that detects and measures exposure to radiation