WorksheetsElectrostatics Review
Total questions: 40
Worksheet time: 26mins
When an object gains electrons it becomes __________
Neutral
Positively charged
Negatively charged
An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________
positively charged because it has excess electrons
negatively charged because it has excess electrons
positively charged because it has a deficiency of electrons
negatively charged because it has a deficiency of electrons
Which statement is true of a positively charged object?
Positively charged objects do not contain any electrons.
Positively charged objects do not contain neutrons or electrons.
There is a deficit of electrons on a positively charged object
The protons and the electrons are both positively charged on such objects.
When two objects are rubbed together, there is a transfer of electrons. How do you determine which object acquires the transferred electrons?
Always transfer from the bigger to the smaller object, to make it even
Transfer is based on the initial charge of the two objects
Transfer is based on how much electron affinity that each object has
Always transfer from the more negative to the more positive object
What method of static charging is shown in this picture
Induction
Friction
Grounding
Electron Shifting
When a charged object contacts another object (one is usually a conductor), there is a transfer of electrons. How do you determine which object acquires the transferred electrons?
Always transfer from the bigger to the smaller object, to make it even
Transfer is based on the initial charge of the two objects
Transfer is based on how much electron affinity that each object has
Always transfer from the more negative to the more positive object
After grounding, how will objects interact?
Both will have the same charge, so they attract one another
Both will be neutral, so they will attract one another
Botn will be neutral, so they will repel one another
Both will be neutral, so they will not attract nor repel
Grounding happens when...
A neutral object comes into contact with another neutral object
A charged object is rubbed against another charged object
A neutral object touches a MASSIVE conductive object
A charged object touches a MASSIVE conductive object
Two conducting spheres A and B, are placed on insulating stands as shown. A negatively charged balloon is brought near A. With the balloon still nearby, the two spheres are separated by moving the insulating stands. What is the resulting charge on A and B?
A: Positive
B: Positive
A: Negative
B: Positive
A: Negative
B: Negative
A: Positive
B: Negative
Reorder the following to show the progression of steps in Charging by Induction.
A solid conducting sphere is given a positive charge Q. How is the charge Q distributed in or on the sphere?
It is concentrated at the center of the sphere.
It is uniformly distributed throughout the sphere.
Its density decreases radially outward from the center.
Its density increases radially outward from the center.
It is uniformly distributed on the surface of the sphere only
Choose the correct sign of the charge on Can I and Can J?
Can I (a)
Can J (b)
A negatively charged balloon will be attracted to a neutral wooden cabinet due to polarization. Which one of the following diagrams best depicts why this occurs? (a)
Choose the direction of electron flow in the diagram shown?
(a)
When a silver atom loses an electron, its net charge (in coulombs) is
+1
-1
+1.6 x 10-19
-1.6 x 10-19
if the charge on both particles is doubled, the force is..
unchanged
halved 1/2
doubled 3x
quadrupled 4x
if the distance is halved and the charge of both particles is doubled the force is how much greater
4x
16x
2x
Which has more charge?
Proton
Electron
Neither
What is the triboelectric series?
Like the World Series: objects compete for electrons
A series of events that create a static charge
A list of materials arranged by strength of electron affinity
A number to show how well an object conducts electrons
If two objects with static charge are attracted, what do you know about them?
They are both positively charged.
They are both negatively charged.
One is positively charged and one is negatively charged, but you won't be able to tell which is which.
One is positively charged and one is negatively charged, and you can tell which is which by looking at them.
Which subatomic particle has the least about of mass?
Proton
Neutron
Electron
Metal sphere A has a charge of +12 elementary charges and identical sphere B has a charge of +16 elementary charges. After the two spheres are brought into contact, what is the charge on sphere A?
-2 elementary charges
+14 elementary charges
+28 elementary charges
+2 elementary charges
The diagram above shows three neutral metal spheres, x, y, and z, in contact and on insulating stands. Which diagram best represents the charge distribution on the spheres when a positively charged rod is brought near sphere x, but does not touch it?
Which of the spheres is an insulator?
A
B
Neither of them
The balloon will be attracted to the wall because
The molecules in the wall become polarized
The molecules in the wall become negatively charged
The molecules in the wall become positively charged
In our lab, the negatively charged top tape was attracted to both the paper and the foil. Which one was the tape attracted to because of charge polarization?
paper
foil
neither of them
both of them
Water molecules act as charge neutralizers because they are naturally
positively charged
negatively charged
polarized
neutral
When an object becomes polarized, it acquires a charge and becomes a charged object.
True
False
The charges in a storm cloud polarize and charge the ground by ____
conduction
induction
Lightning rods are primarily used to attract and ground lightning.
True
False
