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WorksheetsCircuits
Total questions: 65
Worksheet time: 48mins
Name
Class
Date
1.
The job of a battery in a circuit is to...
a)
move the charges
b)
charge the charges
c)
make the charges
d)
electrify the charges
2.
What do resistors do to charges?
a)
Stop the flow of charge
b)
slow the flow of charge
c)
speed up the flow of charge
d)
reverse the flow of charge
3.
The battery determines the direction of charge flow in a circuit.
a)
True
b)
False
4.
Do resistors use up the charges?
a)
Yes
b)
No
5.
If light bulbs always have charge in them, why aren't the bulbs always lit?
a)
the charges must be positive
b)
there must be unequal numbers of + and -
c)
the charges aren't strong enough
d)
the charges must be moving
6.
What kind of charge is required to light up a light bulb?
a)
positive
b)
negative
c)
neutral
d)
moving
7.
In a series circuit, which light bulb lights first?
a)
the one closest to the positive end of the battery
b)
the one closest to the negative end of the battery
c)
the one in the middle of the circuit
d)
they all light at the same time
8.
The term "conventional current" refers to how ___ charges travel in a circuit.
a)
positive
b)
negative
c)
neutral
d)
green
9.
Unlike conventional current, it is really the _____ charges that are moving through the circuit.
a)
positive
b)
negative
c)
neutral
d)
green
10.
If an insulator was placed in a circuit with light bulbs, what would happen to the bulbs?
a)
They would go off
b)
They would turn on
c)
They would flash
d)
They would explode
11.
If a conductor was placed in a circuit with light bulbs, what would happen to the bulbs?
a)
They would go off
b)
They would turn on
c)
They would flash
d)
They would explode
12.
Most conductors are made out of what material?
a)
plastic
b)
wood
c)
glass
d)
metal
13.
Charge moves out of both ends of the battery.
a)
True
b)
False
14.
As resistors are added in series, the total resistance...
a)
increases
b)
decreases
c)
stays the same
d)
goes to zero
15.
As resistors are added in parallel, the total resistance...
a)
increases
b)
decreases
c)
stays the same
d)
goes to zero
16.
To increase the resistance of a circuit, you should connect the resistors in...
a)
a circle
b)
parallel
c)
series
d)
backwards
17.
To decrease the resistance of a circuit, you should connect the resistors in...
a)
a circle
b)
parallel
c)
series
d)
backwards
18.
How are light bulbs like resistors?
a)
They both use up charge
b)
They both slow down charge
c)
They both change the direction of charge flow
d)
They both break when Max touches them
19.
The ability of a resistor to hold back charge flow
a)
resistance
b)
current
c)
voltage
d)
power
20.
The flow of charges through a circuit (# of charges past a point each second)
a)
resistance
b)
current
c)
voltage
d)
power
21.
The electric pressure felt by the charges as they move around the circuit.
a)
resistance
b)
current
c)
voltage
d)
power
22.
The unit for resistance
a)
amps
b)
volts
c)
watts
d)
ohms
23.
The unit for voltage
a)
amps
b)
volts
c)
watts
d)
ohms
24.
The unit for current
a)
amps
b)
volts
c)
watts
d)
ohms
25.
A light bulb with ____ resistance is brighter.
a)
more
b)
less
c)
no
d)
negative
26.
A light bulb with ____ resistance is dimmer.
a)
more
b)
less
c)
no
d)
negative
27.
Thinner wires have ___ resistance than thicker wires.
a)
more
b)
less
c)
equal
d)
no
28.
More resistance generates ____ friction.
a)
more
b)
less
c)
no
d)
equal
29.
In this circuit, all of the charges go through all of the resistors.
a)
complete
b)
parallel
c)
series
d)
circular
30.
When light bulbs are added in a circuit, there is always more total resistance as a result.
a)
True
b)
False
31.
Adding resistors in series ___ resistance.
a)
increases
b)
decreases
32.
Adding resistors in parallel ___ resistance.
a)
increases
b)
decreases
33.
Adding resistors in parallel ___ brightness.
a)
increases
b)
decreases
34.
Adding resistors in series ___ brightness.
a)
increases
b)
decreases
35.
Light bulbs are non-directional devices
a)
true
b)
false
36.
In a parallel circuit, the total resistance is always smaller than the smallest individual resistor.
a)
True
b)
False
37.
In a series circuit, the total resistance is always bigger than the biggest individual resistor.
a)
True
b)
False
38.
All common batteries (AAA, AA, C, D) have this voltage.
a)
1.5 V
b)
3 V
c)
6 V
d)
2 V
39.
In this circuit, if one light bulb burns out, the others go out.
a)
series
b)
parallel
40.
In this circuit, if one light bulb burns out, the others stay on.
a)
series
b)
parallel
41.
Things in parallel have the same
a)
current
b)
voltage
c)
resistance
d)
power
42.
Things in series have the same
a)
current
b)
voltage
c)
resistance
d)
power
43.
In a series circuit, what do you know about the currents?
a)
They decrease as you travel around the circuit
b)
They increase as you travel around the circuit
c)
They are the same everywhere in the circuit
d)
They change directions as you travel around the circuit
44.
In a parallel circuit, what do you know about the voltages?
a)
They decrease as you travel around the circuit
b)
They increase as you travel around the circuit
c)
They are the same everywhere in the circuit
d)
They change directions as you travel around the circuit
45.
A closed path means a circuit has no what in it?
a)
breaks
b)
extra wires
c)
light bulbs
d)
resistors
46.
Three resistors with values of 4.0 Ω, 6.0 Ω and 10.0 Ω are connected in parallel. What is their equivalent resistance?
a)
20.0 Ω
b)
7.3 Ω
c)
6.0 Ω
d)
1.9 Ω
47.
The current flowing in an electric circuit can be increased by:
a)
increasing voltage or decreasing resistance.
b)
decreasing voltage or increasing resistance.
c)
increasing voltage and increasing resistance.
d)
decreasing voltage and decreasing resistance.
48.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
49.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
50.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
51.
A series circuit has ____ path(s) that the electric current can take.
a)
One
b)
Two
c)
Three
d)
Four
52.
Does this statement best describe a parallel or a series circuit.
When more light bulbs are added they all remain bright.
When more light bulbs are added they all remain bright.
a)
Parallel circuit
b)
Series circuit
53.
Does this statement best describe a parallel or a series circuit.
Different currents flow through each resistor.
Different currents flow through each resistor.
a)
Parallel circuit
b)
Series circuit
54.
Does this statement best describe a parallel or a series circuit?
"Each resistor has its own voltage."
a)
Parallel circuit
b)
Series circuit
55.
Does this statement best describe a parallel or a series circuit.
If one part of the circuit fails, the other parts still work.
If one part of the circuit fails, the other parts still work.
a)
Parallel circuit
b)
Series circuit
56.
Does this statement best describe a parallel or a series circuit.
The total resistance is equal to the sum of the individual resistances.
The total resistance is equal to the sum of the individual resistances.
a)
Parallel circuit
b)
Series circuit
57.
When another resistor is added to a parallel circuit, the total current...
a)
goes up.
b)
goes down.
c)
is unaffected.
58.
Electrical resistance is measured in
a)
amperes (A)
b)
coulombs (C)
c)
volts (V)
d)
Ω (ohms)
59.
As resistors are added to a series circuit, the total resistance
a)
increases.
b)
decreases.
c)
stays the same.
60.
As resistors are added to a series circuit, the total current
a)
increases.
b)
decreases.
c)
stays the same.
61.
As resistors are added to a parallel circuit, the total resistance
a)
increases.
b)
decreases.
c)
stays the same.
62.
As resistors are added to a parallel circuit, the total current
a)
increases.
b)
decreases.
c)
stays the same.
63.
The equivalent resistance of resistors in parallel is always
a)
greater than the smallest resistor.
b)
smaller than the smallest resistance.
c)
greater than the greatest resistance.
d)
none of the above
64.
What do you know about the brightest bulb in a series circuit?
a)
The bulb has the greatest resistance.
b)
The bulb has the lowest resistance.
65.
What is the correct equation for Ohm's Law?
a)
V = IR
b)
V = I + R
c)
V = I/R
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