Electrical Fundamentals

Question 1

The force that causes an electric charge to flow refers to:

a) voltage
b) current
c) resistance
d) capacitance

Answer 1

a) voltage

Question 2

The dielectric strength of a material means:

a) it readily conducts an electrical charge
b) it induces a voltage in a conductor
c) the tensile strength of a material when there is a electrical charge flowing through it
d) the insulating strength of the material

Answer 2

d) the insulating strength of the material

Question 3

Examples of semiconductors would be:

a) wood, glass, rubber
b) barium, caesium, plutonium
c) silicon, germanium, selenium
d) gold, cast iron, copper

Answer 3

c) silicon, germanium, selenium

Question 4

A conductor of electricity is a material that:

a) allows electrical charges to move through it
b) has covalently bonded electrons
c) consists of molecules with two or more elements
d) consists of molecules with three or more elements

Answer 4

a) allows electrical charges to move through it

Question 5

When voltage is applied to a conductor:

a) charges move instantaneously from one end of the conductor to the other
b) charges are transmitted from one end of the conductor source
c) energy moves as fast as the constraints of the conductor will allow
d) energy is transmitted instantaneously from one end of the conductor to the other

Answer 5

d) energy is transmitted instantaneously from one end of the conductor to the other

Question 6

Most insulators are:

a) compounds of two or more elements
b) molecules of two or more compounds
c) elements of two or more compounds
d) elements with four valence electrons

Answer 6

a) compounds of two or more elements

Question 7

When current is considered to flow from positive to negative it is considered

a) conventional current direction
b) resistance is futile
c) electromotive force
d) electron theory of current direction

Answer 7

a) conventional current direction

Question 8

The opposition to electron flow is:

a) voltage
b) resistance
c) current
d) power

Answer 8

b) resistance

Question 9

Resistance of a conductor is determined by:

a) length, cross-sectional area, temperature and type of material
b) length, voltage, amperage and type of material
c) voltage, amperage, temperature and type of material
d) length, cross-sectional area, voltage and amperage

Answer 9

a) length, cross-sectional area, temperature and type of material

Question 10

The Watt is a measure of electrical:

a) force
b) flow
c) resistance
d) power

Answer 10

d) power