Curriculum
Course: Alhussan Physics — Stage 8
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Curriculum

Alhussan Physics — Stage 8

Chapter 6: Forces, Motion and Pressure

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Chapter 7: Light

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Chapter 8: Magnetism and Electromagnets

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Chapter 9: Energy Resources

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Chapter 10: The Earth in Space (Galaxies and Asteroids)

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Quiz

8.3 Electromagnets — Quiz

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  • Questions count: 10
  • Passing grade: B+
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1.
Which term matches this definition? “A coil of wire with a magnetic core that is magnetic only while current flows.”
Permanent magnet
Battery
Generator
Electromagnet
2.
What shape is the field around a single straight wire?
Circles around the wire
No field
Like a bar magnet
Straight lines
3.
Which makes an electromagnet stronger?
Fewer turns
A copper core
More turns on the coil
Less current
4.
True or false? An iron core makes an electromagnet much stronger.
True
False
5.
A long coil of wire is called a ____.
resistor
solenoid
fuse
cell
6.
True or false? An electromagnet stays magnetic when the current is switched off.
True
False
7.
The bar chart shows clips picked up by electromagnets. What can you conclude?
Dr Dabour Hub Academy - figure 1
Fewer turns are stronger
Turns have no effect
More turns make a stronger electromagnet
All are the same
8.
40 turns lifted 18 clips. Approximately how many clips per turn?
22.00 clips per turn
720.00 clips per turn
2.22 clips per turn
0.45 clips per turn
9.
The field of a solenoid is similar to that of:
A battery
A bar magnet
A single wire
Nothing
10.
How is an electromagnet switched off?
Reverse the core
Cool it
Paint it
Stop the current
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Part of Chapter 8: Magnetism and Electromagnets — see every lesson and quiz in this unit.
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