NEW
Font size
WorksheetsElectrostatics Review
Total questions: 30
Worksheet time: 7hrs 16mins
Two like charges
neutralize each other.
repel each other.
must be neutrons.
attract each other.
The charge of an electron is
positive.
negative.
Electrons have no charge
An atom loses an electron. What type of charge does it have now?
positive
negative
An atom gains an electron. What type of charge does it have now?
positive
negative
No charge
What direction are the electric field lines around an electron?
towards the charge
away from the charge
What does it mean when the electric field lines are close together?
the field is positive
the field is negative
The field is strong
the field is weak
When a balloon is rubbed on clothes it acquires a charge by ___________
Induction
reduction
friction
concuction
When a glass rod is rubbed with silk and the glass rod becomes positively charged, what happens to the electrons?
they are removed from the rod
they are added to the rod
What do you call the process of charging a conductor by bringing it near another charged object?
induction
polarization
neutralization
conduction
Which of the following is not a good conductor of electricity?
copper
silver
Glass
aluminum
Which of the following is not a good insulator?
Copper
Glass
rubber
wool
The law of conservation of charge states that...
all atoms have more protons than electrons
only protons can be rubbed off of an atom
charge cannot be created or destroyed
charge cannot be transferred
assume a rubber rod is rubbed against a rabbit fur and gains 5 electrons. which of the following is true?
The fur lost 5 electrons
the fur gained 5 electrons
the fur gained 5 protons
The fur lost 2 electrons
If each of the charges doubles, what happens to the electric force?
Quadruples
Doubles
Stays the same
Reduced by half
If the distance between 2 charges doubles, what happens to the electrostatic force?
Reduced by half
Reduced by 1/4
Stays the same
Quadruples
If the distance between two electric charges is reduced by half, what happens to the electrostatic force?
Quadruples
Doubles
Triples
Reduces by half
Electrostatic force F is directly proportional to:
r^2 (distance squared)
q1
q2
both q1 and q2
When distance increases, electrostatic force ____________; we call this relationship ____________ proportional
decreases;directly
decreases;inversely
increases;inversely
increases;directly
Find the magnitude of the electrostatic force between two charges of 1.0 C each, which are 1.0 meter apart?
9 x 10^19 N
9 x 10^9 N
1.1 x10^10 N
1.1x 10^-10 N
Calculate the force exerted between two charged objects separated by a distance of 0.6 m. One object has a charge of -5 C and the other has a charge of +2.0 C.
-1.5E-11 N
2.5E-11 N
-2.5E11 N
-7.5E-10 N
Two like charged particles are held in place near each other. When the particles are released, what will most likely happen?
the will accelerate towards each other
they will accelerate away from each other
they will move towards each other at a constant speed
they will move away from each other at a constant speed
The distance between two charges doubles at the same time that the charge on each also doubles. What happens to the electric force?
doubles
quadruples
cut in half
no change
The electrostatic force between two charges located 2 meters apart is 0.10 N. What will the force be between these charges when they are located 1 meter apart?
0.40 N
0.20 N
0.10 N
0.05 N
In a good insulator, electrons are usually
free to move around
free to move around after an impurity has been added
semi-free to move around
tightly bound in place
The reason a charged balloon will stick to a wall is that
the charge is slightly sticky and acts like glue
electrons transfer back and forth between the wall and the balloon
The wall becomes polarized making the opposite charges in the wall closer than other wall charges
balloon material simply sticks to walls
A point charge of +3.0 X 10-7 coulomb is placed 2.0 X 10-2 meter from a second point charge of +4.0 X 10-7 coulomb. What is the magnitude of the electrostatic force on the charges?
6.0 X 10-12 N
3.0 X 10-10 N
5.4 X 10-2 N
2.7 N
Two balloons are charged with an identical quantity and type of charge: -0.0025 C. They are held apart at a separation distance of 8 m. Determine the magnitude of the electrical force of repulsion between them.
8.79 x 102 N
9.77 x 108 N
7.03 x 103 N
7.98 x 10-2 N
While the spheres are touching, the right sphere is:
neutral
positive
negative
zero
Two equal charges separated by a distance of 8 m experience a repulsive force of 83.2 N. What is the strength in coulombs of each charge?
2.72 x 10-4 C
5.92 x 10-7 C
7.40 x 10-8 C
7.69 x 10-4 C
A woman's hair stands out when she is in contact with a charged Van de Graaff generator. The reason her hair stands out is because
hair strands are at high voltage.
she is in a strong electric field.
like charges repel.
hair is a good conductor.
