Phys 108 Final Exam | 143 Questions and
Answers with Complete Solutions | New Update
2026 | 100% Correct
A fundamental rule of electricity is that - ANSWERS like kinds of charges repel
unlike charges attract
(both of these)
If you rub an inflated balloon against your hair and place the balloon against the
wall it will stick to the wall, illustrating - ANSWERS charge polarization
An electroscope is charged negatively as shown by foil leaves that stand apart. As
a negative charge is brought close to the electroscope, the leaves - ANSWERS
spread apart further
A conductor differs from an insulator in that a conductor - ANSWERS none of
these
(has faster moving molecules, has more protons than electrons, has more energy
than an insulator, has more electrons that protons)
Two charged particles repel each other with a force F. If the charge of one of the
particles is doubled and the distance between them is also doubled, then the
force will be - ANSWERS F/2
,Although the energy per coulomb of high-voltage party balloon is high, the energy
transfer that occurs if you touch it is law due to - ANSWERS the relatively small
amount of charge
How much energy is stored by pushing 4 coulombs of charge into an electric filed,
where its voltage is 2 V greater compared to its starting position? - ANSWERS
8J
voltage= PE/Charge
the electrical force on a 3-C charge is 60 N. What is the value of the electric field
at the place where the chage is located? - ANSWERS 20 N/C
electric Force= force (N)/ Charge (C)
Electric charge distributes itself on conducting surfaces - ANSWERS With
greater concentration on more curved paths and such that the electric field inside
is zero
(both of the above)
The direction of an electric field is the direction of the force that the field would
exert on - ANSWERS a proton
A toaster plugged into a 120 V outlet draws 4 A of current. What is the resistance
of the toaster? - ANSWERS 30 Ohms
Ohms law R=V/I
How much energy will a 9 V battery give to a 3 coulombs of charge passing
through it? - ANSWERS 27 Joules
, voltage= PE/C
Just as water flows from a region of high pressure to a region of low pressure,
electric charge flows from a region of - ANSWERS High potential to a region of
low potential
Ohm's law tells us that the amount of current produced in a circuit is -
ANSWERS directly proportional to voltage and inversely proportional to
resistance
(both of these)
Alternating current is normally produced by a - ANSWERS generator
The source of energy that illuminates a lamp in your home is - ANSWERS The
power company
In an electric circuit, the safety fuse is connected to the circuit in - ANSWERS
series
The power consumed by a device drawing .8 A when connected to 120 V is -
ANSWERS 96 W
Power (W)= Current (A) x Voltage (V)
The electric field established by a battery in a dc circuit - ANSWERS acts in one
direction
Answers with Complete Solutions | New Update
2026 | 100% Correct
A fundamental rule of electricity is that - ANSWERS like kinds of charges repel
unlike charges attract
(both of these)
If you rub an inflated balloon against your hair and place the balloon against the
wall it will stick to the wall, illustrating - ANSWERS charge polarization
An electroscope is charged negatively as shown by foil leaves that stand apart. As
a negative charge is brought close to the electroscope, the leaves - ANSWERS
spread apart further
A conductor differs from an insulator in that a conductor - ANSWERS none of
these
(has faster moving molecules, has more protons than electrons, has more energy
than an insulator, has more electrons that protons)
Two charged particles repel each other with a force F. If the charge of one of the
particles is doubled and the distance between them is also doubled, then the
force will be - ANSWERS F/2
,Although the energy per coulomb of high-voltage party balloon is high, the energy
transfer that occurs if you touch it is law due to - ANSWERS the relatively small
amount of charge
How much energy is stored by pushing 4 coulombs of charge into an electric filed,
where its voltage is 2 V greater compared to its starting position? - ANSWERS
8J
voltage= PE/Charge
the electrical force on a 3-C charge is 60 N. What is the value of the electric field
at the place where the chage is located? - ANSWERS 20 N/C
electric Force= force (N)/ Charge (C)
Electric charge distributes itself on conducting surfaces - ANSWERS With
greater concentration on more curved paths and such that the electric field inside
is zero
(both of the above)
The direction of an electric field is the direction of the force that the field would
exert on - ANSWERS a proton
A toaster plugged into a 120 V outlet draws 4 A of current. What is the resistance
of the toaster? - ANSWERS 30 Ohms
Ohms law R=V/I
How much energy will a 9 V battery give to a 3 coulombs of charge passing
through it? - ANSWERS 27 Joules
, voltage= PE/C
Just as water flows from a region of high pressure to a region of low pressure,
electric charge flows from a region of - ANSWERS High potential to a region of
low potential
Ohm's law tells us that the amount of current produced in a circuit is -
ANSWERS directly proportional to voltage and inversely proportional to
resistance
(both of these)
Alternating current is normally produced by a - ANSWERS generator
The source of energy that illuminates a lamp in your home is - ANSWERS The
power company
In an electric circuit, the safety fuse is connected to the circuit in - ANSWERS
series
The power consumed by a device drawing .8 A when connected to 120 V is -
ANSWERS 96 W
Power (W)= Current (A) x Voltage (V)
The electric field established by a battery in a dc circuit - ANSWERS acts in one
direction
