4/3/23, 10:41 AM
electricity and magnetism
NAME :
CLASS :
electricity and magnetism
26 Questions
DATE :
1.
Electric charges always flow from _____ areas to _____ areas.
A
positive, negative
B
negative, positive
C
positive, neutral
D
neutral, negative
2.
. A material through which electrons do NOT flow easily is a(n) _____.
A
fuse
B
conductor
C
insulator
D
circuit breaker
3.
Which of the following statements about electric charge is true?
A
Objects must be touching on another to
B
exert electrical force.
Opposite electric charges always repel
one another.
C
Air cannot conduct electricity; it is
conducted only by solid materials.
Electrical forces act at a distance.
D
4.
Mr. Robinson and his class are conducting an experiment. The class needs to choose a
good insulator. Which of the following could be used as an insulator?
A
gold necklace
B
silver spoon
C
plastic plate
D
copper wire
5.
Which of the following will increase the resistance of a wire?
A
using a thicker/wider wire
B
using a shorter wire
C
increasing the temperature of the wire
D
using silver instead of copper
?
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electricity and magnetism
6.
The function of a generator is to change ____.
A
mechanical energy to electrical energy
B
chemical energy to electrical energy
C
electrical energy to mechanical energy
D
electrical energy to chemical energy
7.
This exerts a force that causes other electric charges to move.
A
electrical fields
B
insulators
C
conductors
D
electrical poles
8.
The Law of Conservation of Charge states that _____.
A
none of the above
B
charge can be created and destroyed but
NOT transferred.
C
charge cannot be created and destroyed
D
but it can be transferred.
charge cannot be created and destroyed
and it cannot be transferred.
9.
Match the following
Neutrons
A
A
Positively charged particles in an atom
Electroscope
B
B
Negatively charged particles in an
atom
Ferromegnetism
C
C
Particles in the atom that have no
charge
Protons
D
D
When non-magnetic materials become
attracted to magnets
Electrons
E
E
A device that detects electric charge on
an object
10.
Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100
amps?
A
1.98 V
B
100.0198 V
C
0.000198 V
D
5,050 V
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11.
electricity and magnetism
Match the following
Parallel Circuit
A
A
Temporary magnet made by placing a
piece of iron inside a current carrying
coil of wire.
Electromagnets
B
B
A device that measures the voltage
difference in a circuit
Series Circuit
C
C
Circuit that has only one pathway for
current to travel through
Voltmeter
D
D
Circuit that has more than one
pathway for current to travel through
12.
The transformer shown is what type?
A
current transformer
B
step-down
C
isolation transformer
D
step-up
13.
This is the symbol of which electrical device?
A
An electrical cell
B
An resistor
C
A switch
D
A light bulb
14.
This circuit is ...........................?
A
parallel
B
closed
C
the cutiest little circuit ever!
D
open
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electricity and magnetism
15.
The picture shows an electric circuit. This is a series circuit
because:
A
The electrical current is divided between
B
the three light bulbs.
It has 3 light bulbs.
C
The same current flows through all
threelight bulbs.
D
It uses a single battery
16.
Which best describes a parallel circuit?
A
Electricity flows along one pathway.
B
Electricity flows along more than one
pathway
C
The flow of electricity comes from one
source.
D
The flow of electricity comes from more
than one source.
17.
What is one problem with using a series circuit?
A
If one device goes down, they all go
down!
B
It has a lot of series.
C
It doesn't work properly.
D
There are no problems.
18.
A
Does this diagram represent a series or parallel circuit?
series
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B
parallel
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electricity and magnetism
19.
This is an example of a _______ circuit
A
series
B
switch
C
parallel
D
open
20.
The total resistance in this circuit is
A
30 ohms
B
400 ohms
C
450 ohms
D
100 ohms
21.
What is D?
A
Bulb
B
Switch
C
Wires
D
Energy Source
22.
The rate of electron flow in a circuit
A
Resistance
B
Voltage
C
Current
23.
Opposition to the flow of electrons
A
Current
B
Voltage
C
Resistance
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electricity and magnetism
24.
Unit is Ohms Ω
A
Current
C
Resistance
25.
Unit is Amps (A)
A
Voltage
C
Current
26.
Unit is Volts (V)
A
Resistance
C
Voltage
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B
Voltage
B
Resistance
B
Current
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