NEW
Font size
S
M
L
XL
WorksheetsUnit 7: Charge and its Motion
Total questions: 21
Worksheet time: 23mins
Name
Class
Date
1.
How is the electric force between two charges affected when both of the charges are doubled?
a)
four times as much
b)
two times as much
c)
half as much
d)
one quarter as much
2.
What is it called when an object gains a charge when touched by a charged object?
a)
Charging by Induction
b)
Electrostatic Discharge
c)
Charging by Contact
d)
Charging by Friction
3.
What is it called when an object gains a charge without touching a charged object but by being held near the charged object?
a)
Charging by Induction
b)
Electrostatics Discharge
c)
Charging by Contact
d)
Charging by Friction
4.
Two electrically neutral metal spheres, A and B, on insulating stands are placed in contact with each other. A negatively charged rod is brought near, but does not touch the spheres, as shown in the diagram below. How are the spheres now charged?
a)
A is positive and B is positive.
b)
A is negative and B is positive.
c)
A is positive and B is negative.
d)
A is negative and B is negative.
5.
Which net charge could be found on an object?
a)
4.8 x 10-19 C
b)
1.8 x 10-19 C
c)
3.0 x 10-19 C
d)
2.8 x 10-19 C
6.
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 and separated, the charge on sphere A is
a)
+14 elementary charges
b)
+28 elementary charges
c)
+2 elementary charges
d)
-2 elementary charges
7.
Three identical charged metal spheres, X, Y, and Z, are on insulating stands. All three spheres are simultaneously brought into contact with each other and then returned to their original positions.
Which statement best describes the charge of the spheres after this procedure is completed?
Which statement best describes the charge of the spheres after this procedure is completed?
a)
All the spheres will end up with the same charge
b)
All the spheres are neutral
c)
Sphere Y has a greater charge than spheres X or Z
d)
Each sphere retains the same charge that it had originally
8.
Electrostatic force F exists between two point charges. If the both charges are doubled, the force between the charges will be
a)
F
b)
4F
c)
2F
d)
F/4
9.
An electrostatic force of magnitude F exists between two metal spheres having identical charge q. The distance between their centers is r. Which combination of changes would produce no change in the electrostatic force between the spheres?
a)
doubling q on both spheres while halving r
b)
doubling q on one sphere while halving r
c)
doubling q on one sphere while doubling r
d)
doubling q on both spheres while doubling r
10.
Where do electrons go when you rub a balloon on your hair?
a)
Onto the balloon
b)
Into your hair
c)
Nowhere
11.
If the distance doubles, what happens to the force?
a)
Reduced by half
b)
Reduced by 1/4
c)
Stays the same
d)
Quadruples
12.
If the distance is reduced to a third, what happens to the force?
a)
9x larger
b)
3x larger
c)
9x smaller
d)
3x smaller
13.
The process of transferring charge by rubbing
a)
Charging by Induction
b)
Charging by Contact
c)
Charging by Friction
d)
Electrostatic Discharge
14.
What is the unit of electric charge?
a)
Volts
b)
Amps
c)
Coulombs
d)
Ohms
15.
Two objects with negative charges would
a)
Attract
b)
Repel
c)
Do nothing
16.
Which part of the atom moves to create electricity?
a)
Proton
b)
Neutron
c)
Electron
17.
What does it mean when the electric field lines are close together?
a)
the field is positive
b)
the field is negative
c)
The field is strong
d)
the field is weak
18.
Which of the following labeled points is in the region with the strongest force of electric charge
a)
A
b)
B
c)
C
d)
D
19.
If a positively charged rod is brought near a neutral pith ball, what will the pith ball do?
a)
Move away from the rod
b)
Move toward the rod
c)
Do nothing
d)
Disappear
20.
When a glass rod is rubbed with silk and the glass rod becomes positively charged, what happens to the charges?
a)
Electrons are removed from the rod to the ball.
b)
Electrons are removed from the ball to the rod.
c)
Protons are removed from the rod to the ball.
d)
Protons are removed from the ball to the rod.
21.
Two electrons are places at the locations shown between two charged plates. Which electron would experience the greater force?
a)
Electron #1
b)
Electron #2
c)
Same force on both
d)
No way to tell without knowing more information
Reset
