RIO SALADO Physics 112 Final Exam
RIO SALADO PHYSICS 112 FINAL EXAM NEWEST 2025/2026
WITH COMPLETE 100 QUESTIONS AND CORRECT ANSWERS
|ALREADY GRADED A+||BRAND NEW VERSION!
Two charged particles both have positive net charges. They are near each other
and released from rest. Which of the following statements best describes the
interaction of the particles?
A) The particles will attract. As they get closer together, the force of attraction will
increase.
B) The particles will attract. As they get closer together, the force of attraction will
decrease.
C) The particles will repel. As they get further apart, the repelling force will
increase.
D) The particles will repel. As they get further apart, the repelling force will
decrease. - ANSWER-D) The particles will repel. As they get further apart, the
repelling force will decrease.
Which of the following statements regarding charge is most accurate?
A) One type of charge acts like an invisible fluid that can move between objects.
B) Objects with like charges repel, while objects with opposite charges attract.
C) Objects with like charges attract, and objects with opposite charges also attract.
D) Static electric forces, like gravity forces, always attract and never repel. -
ANSWER-B) Objects with like charges repel, while objects with opposite charges
attract.
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, RIO SALADO Physics 112 Final Exam
An object has a positive net charge. The most likely reason for the net charge is
that
A) electrons were transferred onto the object.
B) electrons were transferred off the object.
C) protons were transferred onto the object.
D) protons were transferred off the object. - ANSWER-B) electrons were
transferred off the object.
An electroscope is a device that has small gold foil strips suspended from a metal
rod. If the electroscope is negatively charged, the foil strips will repel and separate
from each other (see below). If you bring a negatively charged rod near the top of
a negatively charged electroscope, the foil strips will
A) separate further.
B) move closer together.
C) not move at all.
D) not enough information. - ANSWER-A) separate further
A particle with a net charge of -2 μC is halfway between two particles with a net
charge of +4 μC and +6 μC, respectively. The two positively charged particles are
10 cm apart. What is the magnitude of the net force on the negative particle?
A) 72 N
B) 14.4 N
C) 3.6 N
D) 18 N - ANSWER-B) 14.4 N
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, RIO SALADO Physics 112 Final Exam
What is the net charge on an object that has gained 8 x 1013 electrons?
A) -8 x 10^13 C
B) -5 x 10^32 C
C) -1.3 x 10^-5 C
D) -2 x 10^-33 C - ANSWER-C) -1.3 x 10^-5 C
Which of the following processes will NOT result in a change in net charge on an
object?
A) Conduction
B) Induction
C) Polarization
D) All of the above processes will result in a change in net charge on an object. -
ANSWER-C) Polarization
Which of the following statements regarding charge is most accurate?
A) Charge is a fundamental property of matter.
B) Protons and electrons carry equal amounts of charge.
C) Two types of charge are possible.
D) All of the above are accurate. - ANSWER-D) All of the above are accurate.
Which of the following is an example of an insulator?
A) A piece of paper
B) A block of wax
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, RIO SALADO Physics 112 Final Exam
C) A block of glass
D) All of the above are examples of insulators - ANSWER-D) All of the above are
examples of insulators
Three charged particles are held in place. Particle A has a net charge of +2 μC and
is at (0, 0) m. Particle B has a net charge of -4 μC and is placed a (0.5, 0) m. Particle
C has a net charge of -4 μC and is at (0, 0.5) m. What is the magnitude of the net
force on particle A?
A) 0.41 N
B) 0.29 N
C) 0.58 N
D) 0.17 N - ANSWER-A) 0.41 N
Which of the following statements regarding static electric charge is most
accurate?
A) Force is proportional to the distance between the charged particles.
B) Force is proportional the inverse distance between the charged particles.
C) Force is proportional to the inverse square distance between the charged
particles.
D) Force is proportional to the square of the distance between the charged
particles. - ANSWER-C) Force is proportional to the inverse square distance
between the charged particles.
Two neutral metal blocks are in physical contact side-by-side. Block A is on the left,
and block B is on the right. A positively charged rod is near the left side of block A
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RIO SALADO PHYSICS 112 FINAL EXAM NEWEST 2025/2026
WITH COMPLETE 100 QUESTIONS AND CORRECT ANSWERS
|ALREADY GRADED A+||BRAND NEW VERSION!
Two charged particles both have positive net charges. They are near each other
and released from rest. Which of the following statements best describes the
interaction of the particles?
A) The particles will attract. As they get closer together, the force of attraction will
increase.
B) The particles will attract. As they get closer together, the force of attraction will
decrease.
C) The particles will repel. As they get further apart, the repelling force will
increase.
D) The particles will repel. As they get further apart, the repelling force will
decrease. - ANSWER-D) The particles will repel. As they get further apart, the
repelling force will decrease.
Which of the following statements regarding charge is most accurate?
A) One type of charge acts like an invisible fluid that can move between objects.
B) Objects with like charges repel, while objects with opposite charges attract.
C) Objects with like charges attract, and objects with opposite charges also attract.
D) Static electric forces, like gravity forces, always attract and never repel. -
ANSWER-B) Objects with like charges repel, while objects with opposite charges
attract.
1|Page
, RIO SALADO Physics 112 Final Exam
An object has a positive net charge. The most likely reason for the net charge is
that
A) electrons were transferred onto the object.
B) electrons were transferred off the object.
C) protons were transferred onto the object.
D) protons were transferred off the object. - ANSWER-B) electrons were
transferred off the object.
An electroscope is a device that has small gold foil strips suspended from a metal
rod. If the electroscope is negatively charged, the foil strips will repel and separate
from each other (see below). If you bring a negatively charged rod near the top of
a negatively charged electroscope, the foil strips will
A) separate further.
B) move closer together.
C) not move at all.
D) not enough information. - ANSWER-A) separate further
A particle with a net charge of -2 μC is halfway between two particles with a net
charge of +4 μC and +6 μC, respectively. The two positively charged particles are
10 cm apart. What is the magnitude of the net force on the negative particle?
A) 72 N
B) 14.4 N
C) 3.6 N
D) 18 N - ANSWER-B) 14.4 N
2|Page
, RIO SALADO Physics 112 Final Exam
What is the net charge on an object that has gained 8 x 1013 electrons?
A) -8 x 10^13 C
B) -5 x 10^32 C
C) -1.3 x 10^-5 C
D) -2 x 10^-33 C - ANSWER-C) -1.3 x 10^-5 C
Which of the following processes will NOT result in a change in net charge on an
object?
A) Conduction
B) Induction
C) Polarization
D) All of the above processes will result in a change in net charge on an object. -
ANSWER-C) Polarization
Which of the following statements regarding charge is most accurate?
A) Charge is a fundamental property of matter.
B) Protons and electrons carry equal amounts of charge.
C) Two types of charge are possible.
D) All of the above are accurate. - ANSWER-D) All of the above are accurate.
Which of the following is an example of an insulator?
A) A piece of paper
B) A block of wax
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, RIO SALADO Physics 112 Final Exam
C) A block of glass
D) All of the above are examples of insulators - ANSWER-D) All of the above are
examples of insulators
Three charged particles are held in place. Particle A has a net charge of +2 μC and
is at (0, 0) m. Particle B has a net charge of -4 μC and is placed a (0.5, 0) m. Particle
C has a net charge of -4 μC and is at (0, 0.5) m. What is the magnitude of the net
force on particle A?
A) 0.41 N
B) 0.29 N
C) 0.58 N
D) 0.17 N - ANSWER-A) 0.41 N
Which of the following statements regarding static electric charge is most
accurate?
A) Force is proportional to the distance between the charged particles.
B) Force is proportional the inverse distance between the charged particles.
C) Force is proportional to the inverse square distance between the charged
particles.
D) Force is proportional to the square of the distance between the charged
particles. - ANSWER-C) Force is proportional to the inverse square distance
between the charged particles.
Two neutral metal blocks are in physical contact side-by-side. Block A is on the left,
and block B is on the right. A positively charged rod is near the left side of block A
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