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Electromagnetism
Test Description: SPI 0807.12.1
Instructions: Answer all questions to get your test result.
1) A student coils a copper wire around a bar magnet. Which action will cause the device to generate electricity?
A
The student uses a horseshoe magnet instead of a bar magnet.
B
The student insulates the copper wire with plastic.
C
The student moves the bar magnet through the copper wire coils.
D
The student connects the copper wire to a light bulb.
2) Which is best used with a bar magnet to produce an electric current?
A
wire coils
B
metal coins
C
silver pins
D
paper clips
3) Which is generated when a bar magnet is moved through a solenoid?
A
electric current
B
gravitational field
C
thermal energy
D
mechanical energy
4) Solenoids spinning between two magnets will produce...?
A
electricity
B
cold
C
steams
D
chemicals
5) What is the invisible force a magnet uses to attract or repel objects?
A
The Force it is called
B
Magnetic Field
C
Push - Pull Force
D
Magnetic Force
6) Where is the magnetic force the strongest in magnets?
A
Bottom
B
Top
C
Poles
D
Sides
7) When you have 2 North sides of the magnets together what will happen?
A
Repel - Push Away
B
Attract - Pull Toward
C
Spin in Circles
D
Nothing
8) When you have a North and South Poles of magnets together what will happen?
A
Repel - Push Away
B
Attract - Pull Toward
C
Nothing
D
Spin in Circles
9) What is another word for coil of wire?
A
spring
B
solenoid
C
circuit
D
slinky
10) How can you increase the production of electricity in an electromagnet?
A
Increase number of coils, and speed of movement of magnet between solenoid
B
Turn the switch up
C
Uncoil the wire completely
D
Decrease number of coils, and slow down movement of magnet between solenoid
11) What does Earth's Magnetic Domain resemble?
A
Bar Magnet
B
Horseshoe magnet
C
Circle Magnet
D
Line Magnet
12) How can you increase the strength of an Electromagnet?
A
Turn the power up
B
Decrease the battery size
C
Decrease the solenoids
D
Increase the solenoids
13) What do you put inside the solenoid of an Electromagnet?
A
Iron nail
B
Rubber nail
C
Copper nail
D
Plastic nail
14) The magnetic domain is the strongest when...
A
the lines are straight
B
the lines are close together
C
the lines are far apart
D
the lines are curvey
15) Which of the following uses a magnet to produce electricity?
A
Motor
B
Generator
C
Fan
D
Engine
*select an answer for all questions
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