RIO SALADO PHYSICS 112 MIDTERM EXAM STUDY
QUESTIONS WITH CORRECT ANSWERS (EXPERT
VERIFIED FEEDBACK) | BRAND NEW VERSION
1. What are materials that allow electrons to move easily through them called?
- ANSWER Conductors
2. Which of the following is NOT true about insulators? - ANSWER Electrons
can move freely through them.
3. What term describes the process of charging two conductors by bringing a
charged object near them and
then separating them? - ANSWER Induction
4. Particle A has a net charge of -6.5 µC, and is 0.40 m to the left of Particle B.
Particle B has a net charge of +15nC. What is the static electric force
between these two particles? - ANSWER 5.5 x 10^10 N attractive
5. What is the relationship between the static electric force and the net charges
on two objects? - ANSWER The force is directly proportional to the
quantity of net charge on both objects.
6. Which of the following is an accurate example of charging by induction? -
ANSWER A student brings a charged rod near a block of metal. The student
taps the block of metal with a hand and then removes the charged rod.
7. 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? -
ANSWER 135 degrees
8. The property of matter that is responsible for static electric effects is -
ANSWER charge.
9. Charged particles A and B experience a static electric force of F. If the
distance between the charge particles triples, then the static electric force
becomes - ANSWER 1/9 F.
10.Which of the following statements best describes conductors? - ANSWER
Conductors are metal and allow charge to move freely through them.
11.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? - ANSWER F
12.The unit used to measure quantity of charge is the - ANSWER Coulomb
13.Two charged particles, each with a charge of +8.0 μC are at some position
near each other. What is the distance between the particles if the static
electric force between them is 5.0 N? - ANSWER 0.34 m
14.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? - ANSWER 0.41 N
, 15.Two charged spheres are suspended from strings. The charged spheres repel
each other. Which statement correctly explains this behavior? - ANSWER
Both spheres have a negative net charge.
Both spheres have a positive net charge.
16.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? - ANSWER 14.4 N
17.An object has a positive net charge. The most likely reason for the net
charge is that - ANSWER electrons were transferred off the object.
18.Which of the following statements regarding charge is most accurate? -
ANSWER Charge is a fundamental property of matter.
Protons and electrons carry equal amounts of charge.
Two types of charge are possible.
19.Which of the following statements concerning the structure of an atom is
accurate? - ANSWER Neutrally charged atoms contain equal amounts of
protons and electrons.
20.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 electric force will be -
ANSWER 3F
21.What is the net charge on an object that has gained 8 × 10^13 electrons? -
ANSWER -1.3 x 10-5 C
QUESTIONS WITH CORRECT ANSWERS (EXPERT
VERIFIED FEEDBACK) | BRAND NEW VERSION
1. What are materials that allow electrons to move easily through them called?
- ANSWER Conductors
2. Which of the following is NOT true about insulators? - ANSWER Electrons
can move freely through them.
3. What term describes the process of charging two conductors by bringing a
charged object near them and
then separating them? - ANSWER Induction
4. Particle A has a net charge of -6.5 µC, and is 0.40 m to the left of Particle B.
Particle B has a net charge of +15nC. What is the static electric force
between these two particles? - ANSWER 5.5 x 10^10 N attractive
5. What is the relationship between the static electric force and the net charges
on two objects? - ANSWER The force is directly proportional to the
quantity of net charge on both objects.
6. Which of the following is an accurate example of charging by induction? -
ANSWER A student brings a charged rod near a block of metal. The student
taps the block of metal with a hand and then removes the charged rod.
7. 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? -
ANSWER 135 degrees
8. The property of matter that is responsible for static electric effects is -
ANSWER charge.
9. Charged particles A and B experience a static electric force of F. If the
distance between the charge particles triples, then the static electric force
becomes - ANSWER 1/9 F.
10.Which of the following statements best describes conductors? - ANSWER
Conductors are metal and allow charge to move freely through them.
11.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? - ANSWER F
12.The unit used to measure quantity of charge is the - ANSWER Coulomb
13.Two charged particles, each with a charge of +8.0 μC are at some position
near each other. What is the distance between the particles if the static
electric force between them is 5.0 N? - ANSWER 0.34 m
14.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? - ANSWER 0.41 N
, 15.Two charged spheres are suspended from strings. The charged spheres repel
each other. Which statement correctly explains this behavior? - ANSWER
Both spheres have a negative net charge.
Both spheres have a positive net charge.
16.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? - ANSWER 14.4 N
17.An object has a positive net charge. The most likely reason for the net
charge is that - ANSWER electrons were transferred off the object.
18.Which of the following statements regarding charge is most accurate? -
ANSWER Charge is a fundamental property of matter.
Protons and electrons carry equal amounts of charge.
Two types of charge are possible.
19.Which of the following statements concerning the structure of an atom is
accurate? - ANSWER Neutrally charged atoms contain equal amounts of
protons and electrons.
20.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 electric force will be -
ANSWER 3F
21.What is the net charge on an object that has gained 8 × 10^13 electrons? -
ANSWER -1.3 x 10-5 C
