Exam 2: Basic Electrical Theory

____ is the best natural conductor of electricity.

Direct current is ____________________, which means that it flows in only one direction.

Alternating current is ____________________, which means it reverses its direction of flow at regular intervals.

The maximum number of electrons that can be contained in any orbit is ____.

The basic building block of the universe is the ____________________.

The neutron and the proton of an atom combine to form the ____________________.

Rubber, wood, plastic, and glass are good examples of ____ materials.

A ____ is generally made from material that contains one or two valence electrons.

____ can be produced when electrons move from one energy level to another.

A(n) ____ is a substance that cannot be chemically divided into a simpler substance.

Materials containing seven or eight valence electrons are known as ____________________.

The most common method of producing electricity is ____.

A ____ charge is formed by an excess of electrons.

The production of electricity by pressure involves the striking, bending, or twisting of certain crystals that is referred to as the ____ effect.

The force that exists between two objects that contain like electrical charges is called ____________________.

The Greeks called amber ____, because of its ability to attract lightweight materials when rubbed with different materials.

The number of ____ in the nucleus determine what kind of element an atom is.

One of the basic laws of physics states that opposite charges ____________________ and like charges ____________________.

A basic law of physics states that a spinning object will pull away from its center point and that the faster it spins, the greater the ____ force becomes.

Producing electricity with heat is referred to as the ____ effect.