- If a Cu
^{2}+ ion drops through a potential difference of 12 V, what kinetic energy will it acquire (in the absence of friction)?

- The absolute potential at the center of a square is 3 V when a
charge of +Q is located at one of the square's corners. What is
the absolute potential at the square's center when a second charge
of -Q is placed at one of the remaining corners?

- The plates of a parallel-plate capacitor are maintained with
constant voltage by a battery as they are pulled apart. During
this process, the amount of charge on the plates must
- increase
- decrease.
- remain constant.
- either increase or decrease. No way to tell from the
information given.

- A dielectric material such as paper is placed between the
plates of a capacitor holding a fixed charge. What happens to the
electric field between the plates?
- No change.
- Becomes stronger.
- Becomes weaker.
- Reduces to zero.

- A parallel-plate capacitor is connected to a battery and
becomes fully charged. The capacitor is then disconnected, and the
separation between the plates is increased in such a way that no
charge leaks off. The energy stored in this capacitor has

- increased.
- decreased.
- not changed.
- become zero.

- Doubling the voltage across a given capacitor causes the
energy stored in that capacitor to
- quadruple
- double
- reduce to one half
- reduce to one fourth

- The resistance of a wire is defined as
- (length) (resistivity)/(cross-sectional area).
- (current) / (voltage).
- (voltage) / (current).
- none of the above.

- If the resistance in a constant voltage circuit is doubled,
the power dissipated by that circuit will
- increase by a factor of two.
- increase by a factor of four.
- decrease to one-half its original value.
- decrease to one-fourth its original value.

- As more resistors are added in series to a constant voltage
source, the power supplied by the source
- increases
- decreases
- does not change.
- increases for a time and then starts to decrease.

- As more resistors are added in parallel to a constant voltage
source, the power supplied by the source
- increases.
- decreases.
- does not change.
- increases for a time and then starts to decrease.

- When resistors are connected in parallel, we can be certain
that
- the same current flows in each one.
- the potential difference across each is the same.
- the power dissipated in each is the same.
- their equivalent resistance is greater than the resistance
of any one of the individual resistances.

- A resistor and a capacitor are connected in series to an ideal
battery of constant terminal voltage. When this system reaches its
steady-state, the voltage across the resistor is
- greater than the battery's terminal voltage.
- less than the battery's terminal voltage, but greater than zero.
- equal to the battery's terminal voltage.
- zero.

- Three identical capacitors are connected in series to a
battery. If a total charge of Q flows from the battery, how much
charge does each capacitor carry?

- Sphere A carries a net charge and sphere B is neutral. They
are placed near each other on an insulated table. Which statement
best describes the electrostatic force between them?
- There is no force between them since one is neutral.
- There is a force of repulsion between them.
- There is a force of attraction between them.
- The force is attractive if A is charged positively and
repulsive if A is charged negatively.

- The net work done in moving an electron from point A at -50 V
to point B at +50 V along the semi-circular path shown is
- It takes 10 J of energy to move 2 C of charge from point A to
point B. What is the potential difference between points A and
B?

- What is the force between a 1.5 micro-C charge and a 2.5
micro-C charge which are 15 cm apart?

- Two 1 C charges have a force between them of 1 N. How far
apart are they?

- A 110 V hairdryer is rated at 1200 W. What current will it
draw?

- Three identical resistors are connected in parallel to a 12-V
battery. What is the voltage of any one of the resistors?

- A 3-ohm resistor is connected in parallel with a 6-ohm resistor. This combination is connected in series with a 4- ohm resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3-ohm resistor?