Worksheet(s) Electrostatics Ch. 5 Test 3

Question 1

What is the principal reservoir for excess electric charge?

A. Clouds
B. Lightening rod
C. The atmosphere
D. The Earth
E. Water pipes

Answer 1

D. The Earth

Question 2

Regarding the movement of an electric charge from one atom to another atom:
A. Both positive and negative charges can move
B. It must occur in a large room
C. Only positive charges move
D. Usually inner shell electrons move
E. Usually outer-shell electrons move

Answer 2

E. Usually outer-shell electrons move

Question 3

Electric energy can be converted into:
A. Chemical energy by an x-ray imaging system
B. Electromagnetic energy by a battery
C. Mechanical energy by a battery
D. Nuclear energy in a nuclear reactor
E. Thermal energy by a lamp

Question 4

Electrostatics:

a. Concerns resting electric charges
b. Concerns the mass-energy conversion of electrons
c. Governs the movement of electric charges in a
conductor
d. Is the conversion of kinetic energy
e. Is the study of photon radiation

Answer 4

a. Concerns resting electric charges

Question 5

Coulomb’s law states that electrostatic force is:
a. Dependent on mAs
b. Directly proportional to the square of the distance
between charges
c. Directly proportional to the square of the product
of charges
d. Inversely proportional to the product of charges
e. Inversely proportional to the square of the
distance between charges

Answer 5

e. Inversely proportional to the square of the
distance between charges

Question 6

Which of the following is a method of
electrification?

a. Diffraction
b. Excitation
c. Induction
d. Resonance
e. Transmission

Answer 6

c. Induction

Question 7

Static electricity:
a. Can make one’s hair stand on end
b. Can produce x-rays
c. Can result in magnetism
d. Is the basis for transformer operator
e. Is the study of electric currents

Answer 7

A

Question 8

The unit of electrostatic charge is the:
a. Ampere
b. Coulomb
c. Electron volt
d. Newton
e. Volt

Answer 8

b. Coulomb

Question 9

The principal electrostatic law states that:

A neutron will repel a neutron.
b. A proton will repel a neutron.
c. An electron will repel a neutron.
d. An electron will repel a proton.
e. An electron will repel an electron.

Answer 9

e. An electron will repel an electron.

Question 10

Objects become electrified because of:

a. An excess of neutrons
b. An excess of protons
c. The transfer of electrons
d. The transfer of neutrons
e. The transfer of protons

Answer 10

c. The transfer of electrons

Question 11

The phenomenon of lightning occurs when:

a. Adjacent clouds are electrically neutral.
b. Adjacent clouds have negative electrification.
c. Adjacent clouds have positive electrification.
d. One cloud is positively electrified and an
adjacent one is negatively electrified.
e. Thunder is heard.

Answer 11

d. One cloud is positively electrified and an
adjacent one is negatively electrified.

Question 12

Which of the following would be included as one
the four basic electrostatic laws?

a. Archimedes’ principle
b. Conversion to magnetism
c. Einstein’s law
d. Electric charge concentration
e. Planck’s law

Answer 12

Electric Charge Concentration

Question 13

An electrostatic force is created when a/an:
a. Electrostatic charge exists.
b. Neutron approaches a neutron.
c. Neutron approaches an electron.
d. Proton approaches a neutron.
e. Proton approaches a proton.

Answer 13

e. Proton approaches a proton.

Question 14

A radiographic tube is operated at 500 mA. Hc
many electrons per second is this?
a. 3.2 X 10^9
b. 3.2 X 10^18
c. 6.3 X 10^9
d. 6.3 X 10^17
e. 6.3 X 10^18

Answer 14

b. 3.2 X 10^18

Question 15

The unit of electrostatic force is the:
a. Coulomb
b. Electron volt
c. Joule
d. Newton
e. Rad

Answer 15

Newton

Question 16

Which of the following are not affected by
electrostatically charged matter?
a. Alpha particles
b. Beta particles
c. Electrons
d. Protons
e. X-rays

Answer 16

B. Beta particles

Question 17

How many electrons are contained in 0.5 uC?
a. 3.2 X 10^6
b. 3.2 X 10^12
c. 6.3 X 10^6
d. 6.3 X 10^12
e. 6.3 X 10^18

Answer 17

b. 3.2 X 10^12

Question 18

When a copper conductor becomes electrified:

a. A kink in the wire will have higher surface
electrification.
b. Excess electrons are uniformly distributed
throughout the wire.
c. It becomes heated.
d. Negative charges concentrate on the surface, and positive charges are distributed throughout.
e. The distribution of protons on its surface is uniform

Answer 18

d. Negative charges concentrate on the surface, and positive charges are distributed throughout.

Question 19

The unit of electric potential is the:
a. Ampere
b. Coulomb
c. Newton
d. Ohm
e. Volt

Answer 19

e. Volt

Question 20

Two positive 0.5 C charges are positioned 1.0 m
apart. The force acting between them is:
a. Attractive
b. Exponential
c. Neutral
d. Repulsive
e. Variable

Answer 20

d. Repulsive