Part 1.
1 2 3 4
None
are
corre
ct
0% 0% 0%0%0%
How many different combinations of the battery, bulb and wire completed the circuit?
1. 12. 23. 34. 45. None are correct
1b
• Wires must touch opposite ends of the battery.
• One end of the wire must touch the end of the light bulb or the metal thread of the bulb
Explain why you think some arrangements work?
A 1a
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Which circuit below will light the bulb?
1. A and B
2. A and C
3. A and D
4. A B D
5. All will light
Part 2a b
The Switch works when the lever is down and touching the metal – this completes the circuit – CLOSED
OPEN – meansswitch is up.
Part 2.
Open
and
On
Open
and
Off
Clo
sed a
nd On
Clo
sed a
nd Off
0% 0%0%0%
Is the switch open or closed?
Would the light be on or off?
1. Open and On2. Open and Off3. Closed and On4. Closed and Off
Part 3. a
Moto
r, sw
itch,
bat
tery
...
Bulb
, wire
, bat
tery
, s...
Bulb
, bat
tery
, switc
h,...
Moto
r, sw
itch
batte
ry,..
.
0% 0%0%0%
Identify each symbol correctly –
1. Motor, switch, battery, wire
2. Bulb, wire, battery, switch
3. Bulb, battery, switch, wire
4. Motor, switch battery, wire
Part 4
All
conne
ctio
ns a
re...
The
bulb is
not o
n
The
batte
ry is
sep
arat
...
0% 0%0%
What does it mean to have a “closed circuit”?
1. All connections are complete
2. The bulb is not on
3. The battery is separate from the bulb
Which of the following did conduct electricity?
Pen cap
strin
g
Rubber band
Plastic s
traw
Paper clip
All conducte
d ...
17% 17% 17%17%17%17%1. Pen cap
2. string
3. Rubber band
4. Plastic straw
5. Paper clip
6. All conducted electricity
Part 5
Part 5
met
al
wat
er air
0% 0%0%
Which of the following materials can electricity NOT travel through?
1. metal
2. water
3. air
What are conductors?
What are insulators?
material through which electric material through which electric current flows easily.current flows easily.
material through which electric material through which electric current cannot movecurrent cannot move
Part 3a
33% 33%33%
When measuring point A and B the voltage readings were …
1. the same
2. Slightly less
3. Slightly more
Part 4a
33% 33%33%
How much current is flowing in the circuit when the bulb is lit?
1. .06 amps
2. 1.5 volts
3. 110 amps
Part 4c
50%50%
If you leave the meter connected but unscrew the bulb the bulb stays lit.
1. True
2. False
Part 1. a/b
Yes
– b
ulbs
very
brig
ht
Yes
– b
ulbs
som
ewha.
..
No –
bulb
s ve
ry b
right
No –
bulb
s so
mew
hat..
.
0% 0%0%0%
Does the current have any choice about where to go? Brightness of bulbs?
What type of circuit is it?
1. Yes – bulbs very bright2. Yes – bulbs somewhat bright3. No – bulbs very bright4. No – bulbs somewhat bright
Series Circuit
Part 1. c
The
other
bulb
...
2.
The
other
...
50%50%Why?
What happens when you unscrew one of the bulbs?
Circuit is broken
1. The other bulb stays lit
2. The other bulb goes out
Part 2. a /b
Yes
– b
ulbs
very
brig
ht
Yes
– b
ulbs
som
ewha.
..
No –
bulb
s ve
ry b
right
No –
bulb
s so
mew
hat..
.
0% 0%0%0%
Does the current have any choice about where to go? Brightness of bulbs?
What type of circuit is it?
1. Yes – bulbs very bright2. Yes – bulbs somewhat bright3. No – bulbs very bright4. No – bulbs somewhat bright
Parallel Circuit
Part 2. c
The
other
bulb
...
The
other
bulb
...
50%50%Why?
What happens when you unscrew one bulb?
In a parallel circuit each bulb has its own path to the battery.
1. The other bulb stays lit
2. The other bulb goes out
Part 3. a
Par
alle
l
Ser
ies
0%0%
Why?
Which type of circuit has brighter light bulbs?
1. Parallel
2. Series
In a parallel circuit each bulb has its own path to the battery.
Part 3 b
• With parallel circuit …– Will provide a constant amount of energy to
each device no matter how many other devices are on
– Can turn devices on and off without affecting other devices
– If used a series circuit all appliances would have to be on or off.
Household wiring is a parallel circuit with each device on a separate branch of wiring. Advantages of this?
A-7
0% 0%0%
A car will sound if a warning bell if you open the door and the lights are on. What type of circuit is this?
1. AND / Series circuit
2. OR / Parallel circuit
3. Both
Bell sounds only if door is open and lights are on.
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