CW-Electrical Fundamentals

The directional movement of electrons is called ____.

• current

• voltage

• resistance

• none of the above

____ is a measurement of the electromotive force produced by a source.

• current

• voltage

• resistance

• none of the above

The opposition to the flow of electrons through a circuit is called ____.

• current

• voltage

• resistance

• none of the above

All matter is made up of tiny particles called ____.

• units

• matter

• atoms

• quasars

Electrons may be free to travel ____.

• from atom to atom

• inside the nucleus

• from proton to proton

• only in super-cooled environments

The electrons in conductive materials ____.

• move easily from nucleus to nucleus

• do not move easily from nucleus to nucleus

• do not move easily from atom to atom

• move easily from atom to atom

Silver, copper, and aluminum are examples of materials that ____.

• are resistors

• are insulators

• are conductors

• possess few easily moved electrons

Substances that resist electron flow are ____.

• conductors

• insulators

• conductive

• typically metals

The electron-pushing force in a conductor is called ____.

• conductive force

• resistance force

• current force

• electromotive force

A(n) ____ is the potential difference between two points in an electric current when the energy needed to move one ampere between the points is one joule.

• volt

• curent

• ohm

• electron