NameDateClass
Using Electricity and Magnetism ■Adapted Test
Using Electricity and Magnetism
Multiple Choice
Write the letter of the correct answer on the line at the left.
1.The relationship between electricity and magnetism is called
a.electromagnetism.
b.mechanical energy.
c.alternating current.
2.What is a coil of wire with a current called?
a.transformer
b.generator
c.solenoid
3.You could increase the strength of an electromagnet by
a.winding the coils of the solenoid farther apart.
b.pulling out the ferromagnetic core.
c.adding more loops of wire to the solenoid.
4.Electrical energy is the
a.energy of an object due to its movement.
b.energy associated with electric currents.
c.energy of an object due to its position.
5.An electric motor changes
a.electrical energy into mechanical energy.
b.the voltage of a current.
c.mechanical energy into electrical energy.
6.The part of an electric motor that reverses the flow of current
is called the
a.solenoid.
b.commutator.
c.generator.
7.Producing an electric current by moving a conductor
through a magnetic field is called
a.mechanical energy.
b.electromagnetic induction.
c.alternating current.
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NameDateClass
Using Electricity and Magnetism ■Adapted Test
8.A current consisting of charges that flow in one direction
only is a(an)
a.direct current.
b.alternating current.
c.magnetic current.
9.A generator changes
a.electrical energy into electromagnetism.
b.electrical energy into mechanical energy.
c.mechanical energy into electrical energy.
10. What is a device that increases or decreases voltage?
a.solenoid
b.transformer
c.galvanometer
Completion
Read each word in the box. In each sentence below, fill in the correct word or words. Not all words will be used.
generatorelectric motorelectromagnet
galvanometeralternatingenergy
11.A solenoid with a ferromagnetic core is a(an)
12.The ability to move an object over a distance is called
13.A device that measures small currents is a(an)
14.Current that reverses direction repeatedly is called
current.
15.A(an)uses motion in a magnetic field
to produce an electric current.
True or False
If a statement is true, write true. If it is false, write false.
16. Wherever there is electricity, there is magnetism.
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13
NameDateClass
Using Electricity and Magnetism ■Adapted Test
17.A magnetic field produced by a current always has the
same direction.
18.Energy can be transformed from one form into another.
19.An electric current will be induced in a conductor
when the conductor moves through a magnetic field.
20.A transformer works with both direct current and
alternating current.
Using Science Skills
The picture below shows an electrical device. Use the picture to answer questions 21 and 22.
Axle
21.Interpreting Diagrams What type of device does the picture
show?
a.electric generator
b.galvanometer
c.electric motor
22.Applying Concepts The axle in this device spins
continuously because
a.the current reverses every half turn.
b.the voltage of the current increases every turn.
c.the current never reverses.
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14
NameDateClass
Using Electricity and Magnetism■Adapted Test
Using Science Skills
The picture shows steps in the transmission of electrical energy from a generating plant to a home. Use the picture to answer questions 23, 24 and 25.
Section B
Section C
Section A
Transformer 2
Transformer 1
Generating Plant
Home
23.Classifying Which transformer is a step-up transformer?
a.Transformer 1
b.Transformer 2
c.Transformer 1 and Transformer 2
24.Inferring Which section of the circuit has the least voltage?
a.Section A
b.Section B
c.Section C
25.Inferring Which section of the circuit has the greatest
voltage?
a.Section A
b.Section B
c.Section C
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