Clicker Question
Right after switch S
is closed, what will
be the potential
difference across
the capacitor?
A) 0
B)
C)
D)
E)
ε
ε R2/(R1+ R2)
ε /2
ε R1/(R1+ R2)
Clicker Question
Right after switch S
is closed, what will
be the potential
difference across
the capacitor?
A) 0
B)
C)
D)
E)
ε
ε R2/(R1+ R2)
ε /2
ε R1/(R1+ R2)
Clicker Question
A long time after switch
S is closed, what will be
the charge on the
capacitor?
A) 0
B) Cε
C)
D)
ε/C
Cε /2
E) C/R2
Clicker Question
A long time after switch
S is closed, what will be
the charge on the
capacitor?
A) 0
B) Cε
C)
D)
ε/C
Cε /2
E) C/R2
Figure 30.15
Figure 30.14
Table 30.1
Clicker Question
An inductor (inductance L)
and a capacitor (capacitance
C) are connected as shown.
If the values of both L and C
are doubled, what happens
to the time required for the
capacitor charge to oscillate
through a complete cycle?
A. It becomes 4 times longer.
B. It becomes twice as long.
C. It is unchanged.
D. It becomes 1/2 as long.
E. It becomes 1/4 as long.
Clicker Question
An inductor (inductance L)
and a capacitor (capacitance
C) are connected as shown.
If the values of both L and C
are doubled, what happens
to the time required for the
capacitor charge to oscillate
through a complete cycle?
A. It becomes 4 times longer.
B. It becomes twice as long.
C. It is unchanged.
D. It becomes 1/2 as long.
E. It becomes 1/4 as long.
Clicker Question
An inductor (inductance L) and a
capacitor (capacitance C) are
connected as shown. The value of
the capacitor charge q oscillates
between positive and negative
values. At any instant, the
potential difference between the
capacitor plates is
A. proportional to q.
C. proportional to d2q/dt2.
E. all of A, B, and C.
B. proportional to dq/dt.
D. both A and C.
Clicker Question
An inductor (inductance L) and a
capacitor (capacitance C) are
connected as shown. The value of
the capacitor charge q oscillates
between positive and negative
values. At any instant, the
potential difference between the
capacitor plates is
A. proportional to q.
C. proportional to d2q/dt2.
E. all of A, B, and C.
B. proportional to dq/dt.
D. both A and C.
Clicker Question
Which phasor
shows current that
is positive and
increasing with
time?
Clicker Question
Which phasor
shows current that
is positive and
increasing with
time?
Clicker Question
Which phasor shows a
current that is negative
with an increasing
magnitude (i.e. getting
more negative?)
Clicker Question
Which phasor shows a
current that is negative
with an increasing
magnitude (i.e. getting
more negative?)
Clicker Question
A resistor is connected across an ac
source as shown. For this circuit,
what is the relationship between the
instantaneous current i through the
resistor and the instantaneous
voltage vab across the resistor?
A. i is maximum at the same time as vab
B. i is maximum one-quarter cycle before vab
C. i is maximum one-quarter cycle after vab
D. not enough information given to decide
Clicker Question
A resistor is connected across an ac
source as shown. For this circuit,
what is the relationship between the
instantaneous current i through the
resistor and the instantaneous
voltage vab across the resistor?
A. i is maximum at the same time as vab
B. i is maximum one-quarter cycle before vab
C. i is maximum one-quarter cycle after vab
D. not enough information given to decide
Clicker Question
An inductor is connected across an ac
source as shown. For this circuit,
what is the relationship between the
instantaneous current i through the
inductor and the instantaneous
voltage vab across the inductor?
A. i is maximum at the same time as vab
B. i is maximum one-quarter cycle before vab
C. i is maximum one-quarter cycle after vab
D. not enough information given to decide
Clicker Question
An inductor is connected across an ac
source as shown. For this circuit,
what is the relationship between the
instantaneous current i through the
inductor and the instantaneous
voltage vab across the inductor?
A. i is maximum at the same time as vab
B. i is maximum one-quarter cycle before vab
C. i is maximum one-quarter cycle after vab
D. not enough information given to decide
Clicker Question
A capacitor is connected across an ac
source as shown. For this circuit,
what is the relationship between the
instantaneous current i through the
capacitor and the instantaneous
voltage vab across the capacitor?
A. i is maximum at the same time as vab
B. i is maximum one-quarter cycle before vab
C. i is maximum one-quarter cycle after vab
D. not enough information given to decide
Clicker Question
A capacitor is connected across an ac
source as shown. For this circuit,
what is the relationship between the
instantaneous current i through the
capacitor and the instantaneous
voltage vab across the capacitor?
A. i is maximum at the same time as vab
B. i is maximum one-quarter cycle before vab
C. i is maximum one-quarter cycle after vab
D. not enough information given to decide