Download Reading Quizzes I

Reading Quiz #1
1) What is true about electric charges?
a)
b)
c)
d)
Unlike charges repel
Unlike charges attract
Like charges attract
Two of the above
2) Is electric charge conserved?
a) Yes b) No c) If no magnetic fields are present
3) Which is a true statement about Coulomb’s law?
a) Electrostatic force falls off like distance squared
b) The force between two charges is inversely
proportional to the amount of charge
c) None of the above
Reading Quiz #2
1) What characterizes the electric field?
a) It is the associated with a charge or a charge configuration
b) It depends on the charge of the test particle probing it
c) Its direction and strength both depend on the position of the
probe charge
d) Two of the above
2) The electric field lines associated with a negative
charge..?
a)
b)
c)
d)
Point radially outward from the charge
Point radially inward toward the charge
Point radially, but direction depends on sign of probe charge
Go anti-clockwise around the charge
3) … charge(s) at a distance constitute an electric dipole?
a) Two positive b) Two negative c) A positive and a negative
Reading Quiz #3
1) The amount of electric flux depends on
a)
b)
c)
d)
e)
Strength of the electric field
Angle between surface pierced by field lines and electric field
The area of the surface
All of the above
Two of the above
2) Gauss’s Law is a relation between …
a) … area and electric flux
b) …charge and electric flux
c) …area and electrostatic force
d) …electric potential and charge
Reading Quiz #4
1) Which of the following statements is NOT true? The
electric potential …
a. has units of Volts.
b. is the electrical potential energy per unit charge.
c. is a vector like the electric field.
d. obeys the Principle of Superposition.
2) The product of a charge q with a potential difference
Vab is equal to …
a. the (minimum) work done in moving the charge from a to b.
b. the change in the charge’s potential energy between a and b.
c. Both of the above are true.
d. Neither of the above is true.
Reading Quiz #5
1) Equipotential lines …
a)
b)
c)
d)
… are lines of equal electric field
… are perpendicular to the electric field
Both of the above
None of the above
2) The electric field in one dimension…
a)
b)
c)
d)
… is the integral over the potential
… is the integral over the potential energy
… is the derivative of the potential
… is the derivative of the potential energy
Reading Quiz #6
1) The charge stored in a capacitor is proportional to
a) … its capacitance
b) … its resistance
c) … the voltage across the capacitor plates
d) Two of the above
e) All of the above
2) What is the equivalent capacitance of a series of
capacitors?
a) sum of the individual capacitances
b) inverse of the sum of the inverse capacitances
Reading Quiz #7
1) The amount of electric energy stored on a
capacitor …?
a) grows with voltage and charge
b) grows with voltage, declines with charge
c) declines with voltage and charge
d) none of above
2) Material between the plates of a capacitor is a …
a) Dialectic b) Dielectric c) Dialectric d) Bimetal
3)What is the effect of material between cap. plates?
a) Increases capacitance
b) Decreases capacitance
c) No effect on capacitance, but on charge on plates
Reading Quiz #8
1)
Electric current is …?
a) The rate change of electric potential per time
b) Amount of charge passing a point (in a wire) per time
c) Rate change of charge per unit area
d) Two of the above
2) Which term was NOT defined in the reading assignment?
a. Resistivity.
b. Current.
c. Conductivity.
d. Impedance.
3) Which is a form of Ohm’s law?
a)
b)
c)
d)
R=V/I
C=Q/V
V=I/R
Q=CU