PHY112 Rio Salado Exam Questions &
Answers (Grade A+)
A positively charged plastic balloon filled with air will stick to a
neutrally charged nonmetal ceiling. Which of the following is the
most likely explanation for this behavior? -
correct answer ✅The balloon caused the ceiling to polarize, which
created a net attracting force between the polarized ceiling and the
balloon.
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 -
correct answer ✅separate further
Two charged particles each with a net charge of -q are a distance r
apart. The electric force F is measured. The distance between the
particles then doubles to 2r, and the amount of charge on BOTH
charges doubles to -2q. Relative to the original force, what is the
new electric force? -
correct answer ✅F
Two positively charged particles experience a static electric force of
F. One of the particles is replaced with a new charged particle that
has three times more charge than the original. The new static
,PHY112 Rio Salado Exam Questions &
Answers (Grade A+)
electric force will be -
correct answer ✅3F
Which of the following statements regarding static electric charge is
most accurate? -
correct answer ✅Force is proportional to the inverse square
distance between the charged particles.
The unit used to measure quantity of charge is the -
correct answer ✅Coulomb
Which of the following statements regarding charge is most
accurate? -
correct answer ✅Charge is a fundamental property of matter.
Protons and electrons carry equal amounts of charge.
Two types of charge are possible.
Which of the following particles carries the positive type of charge?
-
correct answer ✅Protons
, PHY112 Rio Salado Exam Questions &
Answers (Grade A+)
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 placed at (0, 0.5) m. What is the angle of direction of the net
force acting on particle A? -
correct answer ✅135°
Which of the following statements concerning charge is most
accurate? -
correct answer ✅The total charge present in the system and
surroundings is constant in any process.
Which of the following statements best describes conductors? -
correct answer ✅Conductors are metal and allow charge to move
freely through them.
Which of the following processes will NOT result in a change in net
charge on an object? -
correct answer ✅Polarization
An object has a positive net charge. The most likely reason for the
net charge is that -
correct answer ✅electrons were transferred off the object.
Answers (Grade A+)
A positively charged plastic balloon filled with air will stick to a
neutrally charged nonmetal ceiling. Which of the following is the
most likely explanation for this behavior? -
correct answer ✅The balloon caused the ceiling to polarize, which
created a net attracting force between the polarized ceiling and the
balloon.
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 -
correct answer ✅separate further
Two charged particles each with a net charge of -q are a distance r
apart. The electric force F is measured. The distance between the
particles then doubles to 2r, and the amount of charge on BOTH
charges doubles to -2q. Relative to the original force, what is the
new electric force? -
correct answer ✅F
Two positively charged particles experience a static electric force of
F. One of the particles is replaced with a new charged particle that
has three times more charge than the original. The new static
,PHY112 Rio Salado Exam Questions &
Answers (Grade A+)
electric force will be -
correct answer ✅3F
Which of the following statements regarding static electric charge is
most accurate? -
correct answer ✅Force is proportional to the inverse square
distance between the charged particles.
The unit used to measure quantity of charge is the -
correct answer ✅Coulomb
Which of the following statements regarding charge is most
accurate? -
correct answer ✅Charge is a fundamental property of matter.
Protons and electrons carry equal amounts of charge.
Two types of charge are possible.
Which of the following particles carries the positive type of charge?
-
correct answer ✅Protons
, PHY112 Rio Salado Exam Questions &
Answers (Grade A+)
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 placed at (0, 0.5) m. What is the angle of direction of the net
force acting on particle A? -
correct answer ✅135°
Which of the following statements concerning charge is most
accurate? -
correct answer ✅The total charge present in the system and
surroundings is constant in any process.
Which of the following statements best describes conductors? -
correct answer ✅Conductors are metal and allow charge to move
freely through them.
Which of the following processes will NOT result in a change in net
charge on an object? -
correct answer ✅Polarization
An object has a positive net charge. The most likely reason for the
net charge is that -
correct answer ✅electrons were transferred off the object.
