Electrostatics

Strong Nuclear Force

A strong force that holds the particles of

the nucleus of an atom together. Short

range attractive force that is much

larger in magnitude to the gravitational

or the electromagnetic forces.

Weak Force

Force involved in transmutation of

particles within the nucleus. Only

observed/viewed in radioactive

decay. Stronger only than the

gravitational force.

Gravitational Force

Attractive force that exists

between all objects. The

gravitational force between the

Earth and the moon keeps the

moon in orbit. It may be the most

evident but it is the weakest of all

the forces.

Electromagnetic Force

Charged particles at rest or in motion exert electric

forces on each other. They give materials their strength,

their ability to bend, squeeze, stretch or shatter. When

charged particles are in motion, they produce magnetic

forces on each other. Electric and magnetic forces are

both considered to be aspects of this single force.

Insulators

Materials that inhibit the flow

of free charged particles (eg. wood, air, and rubber)

Semiconductors

Intermediate class,

conduction between an insulator and

conductor (eg. germanium, silicon, circuits, CPU’s, televisions, mobile phones)

Rule of Charges

Unlike attract, like repel

Coulomb’s Law

States that the size of the electric force between two charged particles depends on the size of the charges and the distance between them.

negative

Each electron bears a net ___ charge equal in magnitude but opposite in sign to a proton

elementary

The ________ unit of charge is the quantity of charge on an electron or proton

neutral

Under ordinary circumstances, an atom is electrically _____

electrons

All electric phenomena are due to the movements of ____

positive

A neutral object becomes _____ charged if electrons are removed

attract

Unlike charges ____ one another

electroscope

A(n) ______ is a device used to detect the presence of a static charge

conductors

Because they are poor _____, rubber and glass rods are used for electrostatic expiriments

semiconductors

_______ are materials with a conductive capacity between conductors and insulators

conduction

The process of charging a neutral body by touching it with a charged body is called charging by ______

conductor

charges added to a(n) ______ will immediately spread throughout the body

Insulator

Charges added to one part of a(n) _____will remain in that part

attract

A charged body of either sign will _____ a neutral body in which a charge separation is induced

coulomb

The quantity of charge on an object is measured using a unit called the _________

coulomb (the person)

______ first stated the law relating electrical forces to charge and distance

±1.6×10^-19 C

The elementary unit of charge, the charge on an electron or proton is _________

separated

When electrons are transferred from one object to another, positive and negative charges are ______

equal to

The force that charge q exerts on charge q’ is opposite and ____ the force that charge q’ exerts on q

direction

Electric force is a vector quantity because it has magnitude and _____