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parts of an atom that carry a positive charge


parts of an atom that carry a neutral charge


parts of an atom that carry a negative charge


charged atoms

Law of Electric Charges

like charges repel each other
& unlike charges attract

2 things that electric forces are effected by

1. size of charged particles
2. distance between charged objects


charged objects push/pull on other charged objects

Electric Field

a region around a charged particle that can exert a force on another charged particle.

3 Ways an object can become charged

1. Friction
2. Conduction
3. Induction


occurs when you rub something against something else


occurs when electrons are transferred from one object to another by direct contact


occurs when charges are rearranged in an uncharged object without directly contacting a charged object


materials that electric charges can move easily through


materials that do not allow electric charges to flow through them

Static Electricity

a build-up of charges in an object...(these charges eventually leave the object)

Electric Discharge

a loss of static electricity as charges move off an object

Electric Current

delivers electrical energy to machines
(definition: flow of charges)


made up of several cells that covert chemical energy into electrical energy


the difference in energy between 2 points of a moving charge


the total number of electrons flowing past a point each second


unit of current measurement


opposition to a flow of electric charge (the higher the resistance, the lower the current)


unit of resistance measurement

Electric Power

the rate at which electrical energy is used to do work


unit of measurement for power


a complete closed path rghough wich electric charges flow

Series Circuit

a circuit in which all parts are connected in a single loop (has only 1 path for current tol flow)

Parallell Circuit

has more than one path for current to flow

Circuit breakers

limit the amount of current flowing through a wire

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