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Electricity — Test Answers

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3

Which is the electric potential energy of a charged particle divided by its charge?

A
electric potential
B
electric potential difference
C
electric field
D
electric field line
7

What do transformers do in the generation and distribution of electrical energy? Choose two correct answers.

A
turn generators
B
turn turbines
C
decrease voltage
D
increase voltage
E
convert water into steam
8

Which statement best describes the relative conductivity of semiconductors?

A
They are more conductive than metals but less conductive than nonmetals.
B
They are the least conductive elements.
C
They are more conductive than nonmetals but less conductive than metals.
D
They are the most conductive elements.
9

Which factors affect the electrical force between two objects?

A
mass and distance between them
B
charge and distance between them
C
charge and mass
D
mass and electric field strength
10

How does the electrical force relate to the charge of an object?

A
It is inversely proportional to the square of the charge.
B
It is inversely proportional to the charge.
C
It is directly proportional to the charge.
D
It is directly proportional to the square of the charge.
11

Which is the work required to move a charge?

A
electric field line
B
electric potential
C
electric field
D
electric potential energy
12

A charge of 6 point 4 times 10 to the negative 7 power cap c experiences an electric force of 1 point 8 times 10 inverse cap n What is the electric field strength?

A
3 point 6 times 10 to the negative 6 power cap n over cap c
B
1 point 1 times 10 to the negative 7 power cap n over cap c
C
2 point 8 times 10 to the 5th power cap n over cap c
D
8 point 2 times 10 to the 0 power cap n over cap c
13

An electric field is represented by the force on which particle?

A
a dipole
B
a positive test charge
C
a neutron
D
a negative test charge
14

What is the continuous flow of electric charge?

A
potential difference
B
resistance
C
current
D
voltage
15

A charge of 6 point 4 times 10 to the negative 7 power cap c experiences an electric force of 1 point 8 times 10 inverse cap n What is the electric field strength?

A
3 point 6 times 10 to the negative 6 power cap n over cap c
B
2 point 8 times 10 to the 5th power cap n over cap c
C
8 point 2 times 10 to the 0 power cap n over cap c
D
1 point 1 times 10 to the negative 7 power cap n over cap c
18

A pair of opposite electric charges of equal magnitude is called a(n)

A
electric field.
B
dipole.
C
field line.
D
point charge.
19

Which best explains how the constants affect the electrical and gravitational forces?

A
The electrical force is much smaller than the gravitational force because 10 to the 9th power is much greater than 10 to the negative 11 power.
B
The electrical force is much smaller than the gravitational force because 8 point 9 9 is much greater than 6 point 6 7 .
C
The electrical force is much larger than the gravitational force because 8 point 9 9 is much greater than 6 point 6 7 .
D
The electrical force is much larger than the gravitational force because 10 to the 9th power is much greater than 10 to the negative 11 power.
20

Which correctly describes the number of one type of component in this circuit?

A
three bulbs
B
two switches
C
three resistors
D
two batteries

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