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Chapter 23 Review Quiz
Test Description: Magnetism Test
Instructions: Answer all questions to get your test result.
1) What can iron filings be used to show?
A
Gravitational field
B
Electric field
C
Magnetic field
D
None of these
2) Why does the needle of a compass point to magnetic North?
A
Earth\'s North Pole is strongest.
B
Earth\'s North Pole is closest.
C
The compass needle alligns itself with Earth's magnetic field.
D
Only the North Pole attracts compasses.
3) What will the north poles of two bar magnets do when brought together?
A
Not interact.
B
Repel.
C
Attract.
D
Create an electric current.
4) How many poles to all magnets have?
A
One or two
B
Two
C
Three
D
One
5) What a current-carrying wire is wrapped around an iron core, what can it create?
A
An aurora
B
A magnet
C
A generator
D
A motor
6) What does a transformer between utility wires and your house do?
A
Increases voltage.
B
Decreases voltage.
C
Leaves voltage the same.
D
Changes DC to AC.
7) If a transformer has 3 coils input, and 9 coils output, what is the change in voltage?
A
3 times more
B
9 times less
C
3 times less
D
9 times more
8) Which energy transformation occurs in an electric motor?
A
Electrical to kinetic
B
Kinetic to electrical.
C
Potential to kinetic
D
Electrical to thermal
9) What prevents most charged particles from the Sun from hitting the Earth?
A
The aurora.
B
Earth's atmosphere.
C
Earth's magnetosphere.
D
High altitude electric fields
10) Magnetic fields that surround all magnets exert
A
Air pressure
B
Resistance
C
Magnetic force
D
Electric current.
*select an answer for all questions
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