WorksheetsStatic Electricity
Total questions: 16
Worksheet time: 31mins
Name
Class
Date
1.
In a neutral atom, the number of electrons is equal to the number of _______.
a)
Neutrons
b)
Orbits
c)
Protons
d)
subatomic particles
2.
If two charges repel each other, the two charges must be
a)
Positive and neutra
b)
Positive and negative
c)
positive and neutral
d)
negative and negative
3.
An object becomes charged when the atoms in the object gain or lose
a)
electrons
b)
protons
c)
neutrons
d)
all of the above
4.
If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that
a)
friction destroyed electrons in the rod.
b)
the silk has become negatively charged.
c)
protons have moved to the rod.
d)
glass attracts more protons.
5.
If you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges in the surface are rearranged by
a)
friction.
b)
convection.
c)
induction.
d)
conduction.
6.
Objects that have opposite charges
a)
are attracted to each other, and the force between the objects pulls them together.
b)
are attracted to each other, and the force between the objects pushes them apart.
c)
are repelled by each other, and the force between the objects pulls them together.
d)
are repelled by each other, and the force between the objects pushes them apart.
7.
A region around a charged particle that can exert a force on another charged particle is called an
a)
electric pulse.
b)
electric charge.
c)
electric force.
d)
electric field.
8.
Charging by ____ occurs when electrons are transferred from one object to another by direct contact.
a)
reduction
b)
induction
c)
conduction
d)
friction
9.
The "Q" in Coulomb's Law stands for
a)
the mass of charges objects.
b)
the distance of charged objects.
c)
the force of charged objects.
d)
the charge of charged objects.
10.
Force between two bodies having charges 5.0 x 102 μC and 1.0 x 102 μC separated by distance of 0.50 m in air is
a)
1800 N
b)
1.0 x 103 N
c)
2200 N
d)
3.0 x 102 N
11.
A positive charge of 4.0 µC exerts an attractive force of 8.0 N on an unknown charge 20.0 cm away. The unknown charge is
a)
+ 8.9 µC
b)
- 8.9 µC
c)
+ 4 µC
d)
- 44 µC
12.
When you pull a cotton sweater off your skin, electrons are transferred from the ___________________ (cotton, skin) to the __________________ (cotton, skin). As a result, your body acquires a ___________ (+ , -) charge and the cotton sweater acquires a ___________ (+ , -) charge.
a)
skin, cotton, +, -
b)
cotton, skin, +, -
c)
skin , cotton, -, +
d)
cotton, skin, -, +
13.
Which ranking is correct?
a)
A < B
b)
J < H < I
c)
F < G < E
d)
D < C
14.
Electric field lines are drawn
a)
In a radial direction, from negative to positive.
b)
In a radial direction, from positive to negative.
c)
In a tangent direction, from positive to negative.
d)
In a tangent direction, from negative to positive.
15.
Which part of Coulomb's Law is always squared?
a)
distance
b)
charge
c)
Coulomb's constant
d)
force
16.
A glass rod rubbed against your hair gains a charge of -14.0 nC. What is the electric force between the balloon and your hair when the two are separated by a distance of 7.1 cm?
a)
3.5 x 104 N
b)
-3.5 x 104 N
c)
- 3.5 x 10-4 N
d)
3.5 x 10-4 N
100 %
