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WorksheetsElectrostatics
Total questions: 20
Worksheet time: 26mins
Name
Class
Date
1.
The charge of an electron is
a)
positive.
b)
negative.
c)
Electrons have no charge
2.
Atomic nuclei of almost all elements consist of
a)
protons and neutrons
b)
protons and electrons.
c)
neutrons and electrons.
d)
only protons.
3.
Two like charges
a)
neutralize each other.
b)
repel each other.
c)
must be neutrons.
d)
attract each other.
4.
Electrical forces between charges are strongest when the charges are
a)
far apart.
b)
close together.
c)
The electrical force is constant everywhere.
5.
The net charge of a nonionized atom
a)
depends only on the number of electrons it has.
b)
usually cannot be determined.
c)
is zero.
d)
depends only on the number of protons it has.
6.
To say that electric charge is conserved means that no case has ever been found where
a)
the total amount of charge on an object has increased.
b)
the total charge on an object has changed.
c)
one object has more charge than another object.
d)
net charge has been created or destroyed.
7.
Charge carriers in a metal are electrons rather than protons, because electrons are
a)
relatively far from a nucleus.
b)
loosely bound.
c)
lighter.
d)
none of the above
8.
A conductor differs from an insulator in that a conductor has
a)
more protons than electrons.
b)
none of the above
c)
more electrons than protons.
d)
more electrons than an insulator.
9.
A negatively charged rod is brought near a metal can that rests on a wood table. You touch the opposite side of the can momentarily with your finger. The can is then
a)
positively charged.
b)
negatively charged.
c)
charged the same as it was.
d)
uncharged.
10.
An electroscope is charged positively, as shown by foil leaves that stand apart. As a negatively charged rod is brought close to the electroscope, the leaves
a)
spread farther apart.
b)
do not move.
c)
move closer together
11.
To charge an object by induction, the process of grounding
a)
may or may not occur.
b)
always occurs.
12.
Bring a charged object near a conductor and then momentarily touch the conductor. This demonstrates charge by
a)
deduction.
b)
polarization. .
c)
induction.
d)
electrification
13.
The charge distribution in some molecules is permanently separated into positive and negative regions. Such molecules are called
a)
a. ionized molecules.
b)
b. electric dipoles.
c)
c. coulomb molecules.
d)
d. induced molecules.
14.
Two charged particles held close to each other are released. As they move, the force on each particle increases. Therefore, the particles have
a)
a. opposite signs.
b)
b. the same sign.
c)
c. charges that cannot be determined
15.
A positive charge and a negative charge held near each other are released. As they move, the force on each particle
a)
increases.
b)
stays the same.
c)
decreases.
16.
The SI unit of charge is the
a)
joule.
b)
coulomb.
c)
ampere.
d)
newton.
17.
Particle A has twice as much charge as particle B. Compared to the force on particle A, the force on particle B is
a)
half as much.
b)
two times as much.
c)
four times as much.
d)
the same.
18.
The electrostatic force between two charges located 8 meters apart is 0.10 N. What will the force be between these charges when they are located 2 meters apart?
a)
0.01 N
b)
0.03 N
c)
0.1 N
d)
1.6 N
19.
A 2-C charge and a 4-C charge attract each other with 10 N of force. How much will a 2-C charge and a 12-C charge attract each other when placed the same distance apart?
a)
5 N
b)
12 N
c)
30 N
d)
10 N
20.
Two charges separated by a distance of 1 meter exert a 2-N force on each other. If the magnitude of each charge is doubled, the force on each charge is
a)
2 N.
b)
4 N.
c)
8 N.
d)
16 N.
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