WorksheetsElectric charges/fields
Total questions: 20
Worksheet time: 26mins
Name
Class
Date
1.
Which quantity and unit are correctly paired?
a)
electric field strength and N/C
b)
electricity and Coulombs
c)
electrostatic force and electrons
d)
electric field strength and E
2.
Which of the following statements is false about electric field lines
a)
electric field lines cannot cross
b)
electric field lines point away from positive charge
c)
electric field lines are always straight lines
d)
electric field lines show how a proton would move in an electric field
3.
At which point is the electric field the strongest
a)
A
b)
B
c)
C
d)
D
4.
Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.
a)
+,+
b)
+,-
c)
-,+
d)
-,-
5.
It is observed that Balloon A is charged negatively. Balloon B exerts a repulsive effect upon balloon A. Would the electric field vector created by balloon B be directed towards B or away from B and why?
a)
towards because electric field lines point away from negative charges
b)
towards because electric field lines point away from positive charges
c)
away because electric field lines point away from negative charges
d)
away because electric field lines point toward positive charges
6.
QA and QB are two charges creating an electric field. Based on the electric field lines, we can conclude
a)
QA and QB are both positive
b)
QA and QB are both negative
c)
QA is positive and QB is negative
d)
QA is negative and QB is positive
7.
Which of the following is a true statement about the electric field between the two plates?
a)
The field is attractive between the plates and uniform in strength
b)
The field is repulsive between the plates and uniform in strength
c)
The field is attractive between the plates and strongest near the positive
d)
The field is repulsive between the plates and strongest near the positive
8.
The electrical force between charges is strongest when the charges are
a)
close together
b)
far apart
c)
the electric force is constant everywhere.
d)
there is no pattern
9.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons
10.
Electric charges that are different _______ each other.
a)
Attract
b)
Repel
11.
Electric charges that are alike _______ each other.
a)
Attract
b)
Repel
12.
What is the SI unit used to measure force?
a)
pounds
b)
grams
c)
newtons
d)
friction
13.
According to Coulomb's Law, The greater the separation distance between two charges the greater the magnitude of the electric force. True or False?
a)
True
b)
False
14.
Electrostatic force F is directly proportional to:
a)
r^2 (distance squared)
b)
q1
c)
q2
d)
both q1 and q2
15.
Find the magnitude of the electrostatic force between two charges of 1.0 C each, which are 1.0 meter apart?
a)
9 x 10^19 N
b)
9 x 10^9 N
c)
1.1 x10^10 N
d)
1.1x 10^-10 N
16.
What are the two types of charges that objects may possess?
a)
+ and +
b)
+ and -
c)
+ and neutral
d)
- and neutral
17.
If an object has a net charge of +2e this means it has
a)
lost 2 electrons
b)
gained 2 electrons
c)
lost 2 protons
d)
gained 2 protons
18.
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
19.
What do you call the process of charging a conductor by bringing it near another charged object?
a)
induction
b)
polarization
c)
neutralization
d)
conduction
20.
Which has a charge with the greatest magnitude?
a)
An object with a charge of 0.
b)
An object with a charge of -2
c)
An object with a charge of +2
d)
An object with a charge of -3
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