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