Transcript Circuit Clicker questions

Standard Brightness
Series
Which bulb, if either, in a series
circuit is brighter?
A. first bulb
B. second bulb
C. They have equal
brightness.
The brightness of bulbs in series ___
the standard brightness.
A. is dimmer than
B. have the same
brightness as
C. is brighter than
The current from the battery with the
bulbs in series is ____ than the
standard current?
A. less than
B. equal to
C. greater than
The resistance in the circuit with the
bulbs in series is ____ that the
standard resistance.
A. less than
B. equal to
C. greater than
Parallel
Which bulb, if either, in a parallel
circuit is brighter?
A. left bulb
B. right bulb
C. They have equal
brightness.
The brightness of bulbs in parallel
___ to the standard brightness.
A. is dimmer than
B. is the same
brightness as
C. is brighter than
The current from the battery with the
bulbs in parallel is ____ than the
standard current.
A. less than
B. equal to
C. greater than
The resistance in the circuit with the
bulbs in parallel is ____ that the
standard resistance.
A. less than
B. equal to
C. greater than
The lightbulbs in the circuit
below are identical with the
A) circuit 1
B) circuit 2
same resistance R. Which
circuit produces more light?
(brightness  power)
C) both the same
D) it depends on R
Points P and Q are connected
to a battery of fixed voltage.
As more resistors R are added
to the parallel circuit, what
happens to the total current in
the circuit?
A) increases
B) remains the same
C) decreases
D) drops to zero
Assume that the voltage of the
A) 12 V
battery is 9 V and that the three
B) zero
resistors are identical. What is
C) 3 V
the potential difference across
D) 4 V
each resistor?
E) you need to know the
actual value of R
9V
A) 12 V
In the circuit below, what
B) zero
is the voltage across R1?
C) 6 V
D) 8 V
E) 4 V
R1= 4 W
R2= 2 W
12 V
In the circuit to the right,
what is the current
through R1?
R2= 2 W
A) 10 A
B) zero
R1= 5 W
C) 5 A
D) 2 A
E) 7 A
10 V
F
E
G
Which bulbs are the brightest?
A.
B.
C.
D.
E.
E
F
G
F&G
E, F & G
Which bulbs are the dimmest?
A.
B.
C.
D.
E.
E
F
G
F&G
E, F & G
What happens to the brightness of
bulb F if I unscrew bulb E?
A.
B.
C.
D.
goes out
gets dimmer
stays the same
gets brighter
What happens to the brightness of
bulb E if I unscrew bulb F?
A.
B.
C.
D.
goes out
gets dimmer
stays the same
gets brighter
What happens to the brightness of
bulb G if I short circuit bulb F?
A.
B.
C.
D.
goes out
gets dimmer
stays the same
gets brighter
What happens to the brightness of
bulb F if I short circuit bulb E?
A.
B.
C.
D.
goes out
gets dimmer
stays the same
gets brighter
A 10 W bulb and a 20 W bulb are connected
in series. Which bulb is brighter?
A)The 10 W
B)The 20 W
C)They are the same brightness
A 10 W bulb and a 20 W bulb are connected
in parallel. Which bulb is brighter?
A)The 10 W
B)The 20 W
C)They are the same brightness
4V
8W
W
6
9#48
W
WW#48
659W
B
W
95#13
W
6
A
#13
D
C
W
W
986W
a) A
1. The brightest bulb is
b) B
c) C
d) D
e) A and B
4V
8W
W
6
9#48
W
WW#48
659W
B
W
95#13
W
6
A
#13
D
C
W
W
986W
a) A
The dimmest bulb is
b) B
c) C
d) D
e) A and B
4V
8W
W
6
9#48
W
WW#48
659W
B
W
95#13
W
6
A
#13
D
C
W
W
986W
Which bulb has the least voltage across it?
a) A
b) B
c) C
d) D e) B and C