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ELECTROSTATIC

Total questions: 20

Worksheet time: 14mins

Name
Class
Date
1.
Electrostatic force F is directly proportional to:
a)
r^2 (distance squared)
b)
q1
c)
q2
d)
both q1 and q2
2.
When distance increases, electrostatic force ____________; we call this relationship ____________ proportional
a)
decreases;directly
b)
decreases;inversely
c)
increases;inversely
d)
increases;directly
3.
Two oppositely charged particles are held in place near each other. When the particles are released, what will most likely happen?
a)
the will accelerate towards each other
b)
they will accelerate away from each other
c)
they will move towards each other at a constant speed
d)
they will move away from each other at a constant speed
4.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
5.
At which point is the electric field the weakest?
a)
A because it is the furthest away
b)
A because the field lines are further apart
c)
C because the field lines are further apart
d)
C  because it is the furthest away
6.
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)
-,-
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.

Which graph best represents the relationship between the strength of an electric field and distance from a point charge?

a)
b)
c)
d)
9.
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
10.

The magnitude of electric potential is ______ at an infinite distance.

a)

0

b)

negative infinity

c)

positive infinity

d)

200

11.
Electric potential is defined as potential. 
a)
electrical potential energy of a charge multiplied by the quantity of the charge.
b)
 electrical potential energy of a charge divided by the quantity of the charge. 
c)
electrical potential energy. 
d)
gravitational 
12.

A student generates an equipotential map of a point charge and notices the electric potential decreases the further away from the charge. From only this information the student can determine which of the following?

a)

The charge is positive

b)

The charge is negative

c)

The magnitude of the charge

d)

Nothing, more information is required

13.

A positive charge  +Q  is placed a distance  dd  from a negative charge  −Q-Q . Note these charges have the same magnitude but different sign. Which of the following is true about the electric field and the electric potential at a point midway between the two charges? 

a)

The electric field is zero and the electric potential is zero

b)

The electric field is not zero and the electric potential is zero

c)

The electric field is zero and the electric potential is not zero

d)

The electric field is not zero and the electric potential is not zero

14.

These form a surface where the electric potential is constant everywhere on the surface.

a)

Gaussian surface

b)

Flux surface

c)

Equipotential lines

d)

Equatorial lines

15.

An electron is placed on an equipotential surface of 20 V. On one side of this surface there is another equipotential surface of 16 V and on the other side there is an equipotential surface of 24 V. Towards which equipotential line will the electron move towards?

a)

Towards the 16 V line

b)

Towards the 24 V line

c)

Perpendicular to the page

d)

The electron will not move since there's an equal potential difference on both sides

16.

Which graph best represents the relationship between the magnitude of the electrostatic force and the distance between two oppositely charged particles?

a)
b)
c)
d)
17.

If the charge on each of two small charged metal spheres is doubled and the distance between the spheres remains fixed, the magnitude of the electric force between the spheres will be

a)

two times as great

b)

four times as great

c)

one-half as great

d)

the same

18.
The direction of electric field lines shows the 
a)
direction of the force on a test positive charge.  
b)
size of the field.
c)
c. strength of the field. 
d)
d. all of the above
19.
Electrical potential energy is the energy a charged object has because of its 
a)
momentum. 
b)
location. 
c)
mass.  
d)
motion.
20.
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

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