Gen Phys - Electric charge and static electricity

Law of electric charge

states that like charges repel, and opposite charges attract

Electric force

the force between the charged objects

The amount of charge and the distance between the charges

size of electric forces depends on 2 things

Electric field

the region around a charged object where electric forces can be exerted on another charged object

True

True or false atoms do not have a charge

The number of electrons and protons cancel each other out

why do atoms have no charge

Electrons

Objects get charged when they either gain or lose __

Friction, Conduction, Induction

3 ways objects can be charged

Charging by friction

happens when electrons are wiped from one object to another

Charging by conduction

happens when electrons move from one object to another through direct contact (touching)

Charging by induction

happens when charges in an uncharged object are rearranged without direct contact with a charged object

True

True or false. When you charge something by any method, no charges are created or destroyed

Conservation of charge

the number of electrons and protons stays the same, electrons simply move from one atom to another, which makes areas that have different charges

Electrical conductor

a material in which charges can move easily

Electrical insulator

a material in which charges cannot move easily

Insulators

their electrons cannot flow freely

Conductors

some of their electrons are free to move

Static electricity

the result of an imbalance between negative and positive charges in an object

Do not move away

The charges of static electricity ___from the object that they are in. so the object keeps its charge

Highest point

Lightning usually strikes the __ in a charged area

Lightning rod

a pointed rod connected to the ground by a wire