Transcript Electrostatics

Electrostatics
What elementary particle carries a
negative charge?
A.
B.
C.
D.
E.
proton
electron
neutron
atom
none of these
What is the numerical value of
elementary charge
A.
B.
C.
D.
E.
1C
1.6X10-19 C
1.6X10-9 C
1.6X1019 C
None of these
What elementary particle carries a
positive charge?
A.
B.
C.
D.
E.
proton
electron
neutron
atom
none
Scraping electrons from one object to
another is known as charging by…
A.
B.
C.
D.
E.
friction
conduction
induction
convection
none
What method of charging results in 2 objects
with equal and opposite charges?
A.
B.
C.
D.
E.
friction
conduction
induction
convection
none
What method of charging involves direct
contact between a charged and uncharged
object to transfer charge?
A. friction
B. conduction
C. induction
D. convection
E. none
What method of charging requires a charged
object to be brought near a neutral object causing
a polarization of charges in the neutral object?
A.
B.
C.
D.
E.
friction
conduction
induction
convection
none
What method of charging results in a
state of electrostatic equilibrium?
A.
B.
C.
D.
E.
friction
conduction
induction
convection
none
Which statements are true according to the
“fundamental rule of charge”? (Choose all
that apply.)
A. All charges repel
B. Charges do not affect each other
C. Likes attract
D. Opposites repel
E. Opposites attract
F. All charges attract
G. Likes repel
H. None of these are true statements
In what unit is electric charge
measured in the metric system?
A.
B.
C.
D.
E.
F.
Newton
Joule
Ohm
Coulomb
Electron
None
Which of these is an insulator?
(Choose all that apply.)
A.
B.
C.
D.
E.
F.
G.
Copper
Styrofoam
Wood
Rubber
Gold
Water
Paper
Which of these materials is a
conductor? (Choose all that apply.)
A.
B.
C.
D.
E.
Silver
Aluminum
Concrete
Paper
Water
According to Coulomb’s Law, the electrostatic
force between two charged particles is …
Choose all that apply)
A. Inversely proportional to the amount of
charge on the largest particle only
B. Directly proportional to the amount of
charge on both particles
C. Directly proportional to the distance
between the two charges
D. Inversely proportional to the distance
squared
E. None of these are true statements
According to Coulomb’s Law, if the charge
on q1 doubles, what happens to the force
between the charges?
A. Force doubles
d
F
F
B. Force is cut in half
+
+
q2
q1
C. Force is quadrupled
D. Force is one-fourth of original
E. None of these
According to Coulomb’s Law, if both charges
double, what happens to the force between
the charges?
A. Force doubles
d
F
F
B. Force is cut in half
+
+
q2
q1
C. Force is quadrupled
D. Force is one-fourth of original
E. None of these
According to Coulomb’s Law, if the distance
between the charges doubles, what
happens to the force between the charges?
F
A.
B.
C.
D.
E.
d
+
q1
Force doubles
Force is cut in half
Force is quadrupled
Force is one-fourth of original
None of these
+
q2
F
Which of the following quantities is described
as the amount of energy per unit of charge?
A.
B.
C.
D.
E.
Electrostatic Force
Electric Field
Electric Potential Energy
Electric Potential
Capacitance
Which of the following quantities is described as
the “sphere of influence” around a charge where
any other charge would experience a force?
A.
B.
C.
D.
E.
Electrostatic Force
Electric Field
Electric Potential Energy
Electric Potential
Capacitance
Which of the following quantities is described as
the interaction between two charged particles
according to the fundamental rule of charge?
A.
B.
C.
D.
E.
Electrostatic Force
Electric Field
Electric Potential Energy
Electric Potential
Capacitance
Which of the following quantities is described
as the amount energy contained in a system of
charges?
A.
B.
C.
D.
E.
Electrostatic Force
Electric Field
Electric Potential Energy
Electric Potential
Capacitance
The electric field shown below
indicate that the sign of the charge,
q, is …
A.
B.
C.
D.
positive
negative
neutral
impossible to tell
q
Electric Field is measured in…
(Choose all that apply)
A.
B.
C.
D.
E.
F.
G.
Newtons
Volts
Joules
Newtons/Coulomb
Joules/Coulomb
Coulombs
None of these
Electric Potential is measured in…
(Choose all that apply)
A.
B.
C.
D.
E.
F.
G.
Newtons
Volts
Joules
Newtons/Coulomb
Joules/Coulomb
Coulombs
None of these
Electrostatic Force is measured in…
(Choose all that apply)
A.
B.
C.
D.
E.
F.
G.
Newtons
Volts
Joules
Newtons/Coulomb
Joules/Coulomb
Coulombs
None of these
Electric Potential Energy is measured in…
(Choose all that apply)
A.
B.
C.
D.
E.
F.
G.
Newtons
Volts
Joules
Newtons/Coulomb
Joules/Coulomb
Coulombs
None of these
The concentric circles around the
charge, q, represent …
A.
B.
C.
D.
Electric Field lines
Equipotential lines
Energy levels of an electron
None of these
q
On the diagram below, the Electric
Potential at each point on a given line
is…
q
A. A different value
B. The same value
C. Zero at all points
On the diagram below, the innermost
circle represents…
q
A.
B.
C.
D.
The highest electric potential points
The lowest electric potential points
Points with zero electric potential
All points on all of these lines have the
exact same potential as the others.
A capacitor is…
(choose all correct statements)
A. A battery
B. A device that stores charge
C. A device that releases charge in a quick
burst
D. A device that is made of 2 conductors
separated by an insulator
E. A device that is made of 2 insulators
separated by a conductor.
Capacitance is measured in…
A.
B.
C.
D.
E.
Coulombs
Newtons
Joules
Farads
Volts