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Science 6 Chapter 11 Test Set B
Test Description: Electricity and Magnetism
Instructions: Answer all questions to get your test result.
1) A maglev train floats above its rails due to
A
magnetic field lines
B
magnetic force
C
electricity
D
electric motors
2) A galvanometer is a device that measures small
A
changes in solenoid loops
B
motors
C
currents
D
magnetic fields
3) When a wire moves up or down repeatedly in a(n) __________, an alternating current is induced.
A
solenoid
B
blender
C
magnetic field
D
bar magnet
4) A step up transformer is one that increases
A
size
B
magnetism
C
voltage
D
galvanometer readings
5) A strong magnet that can be turned on and off is called
A
an electromagnet
B
a bar magnet
C
a motor
D
a solenoid
6) A magnetic pole is the part of a magnet where the magnetic effect is the weakest.
A
False: Change magnetic effect to electric current
B
True
C
False: Change pole to field
D
False: Change weakest to strongest.
7) A compass behaves as it does because the moon acts as a giant magnet.
A
False: Change magnet to gravitational center.
B
False: Change moon to Earth
C
True
D
False: Change compass to astrolabe
8) A DC generator is like an AC generator except that it contains a commutator instead of slip rings.
A
False: Change commutator to brush
B
True
C
False: Change slip rings to brushes
D
False: Change slip rings to armature
9) Increasing the number of loops in a solenoid will cause the strength of its magnetic field to decrease.
A
False: Change solenoid to electromagnet
B
False: Change decrease to increase.
C
False: Change loops to ferromagnetic cores.
D
True
10) Magnets attract iron.
A
False: Change magnets to solenoids.
B
False: Change attract to repel.
C
False: Change iron to metals.
D
True.
*select an answer for all questions
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