What is a magnetic field?

Exploring Electromagnets

Quiz
•
Other
•
8th Grade
•
Hard
Layla Samir (M. SH.) Al Dweik Lawleit
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A magnetic field is a region where magnetic forces can be observed.
A magnetic field is a type of electrical current.
A magnetic field is a measure of temperature in a material.
A magnetic field is a solid object that attracts metals.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a magnetic field created?
A magnetic field is created by the rotation of the Earth.
A magnetic field is created by static electricity.
A magnetic field is created by the presence of light.
A magnetic field is created by the movement of electric charges or by permanent magnets.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the main components of an electromagnet?
Coil of wire and a core material (usually iron)
Copper wire and plastic core
Magnet and wire
Battery and switch
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between a permanent magnet and an electromagnet?
A permanent magnet can be turned on and off, while an electromagnet cannot.
A permanent magnet has a constant magnetic field, whereas an electromagnet's field is temporary and controlled by electric current.
An electromagnet is made of permanent materials, while a permanent magnet is made of coils.
Both permanent magnets and electromagnets have the same strength at all times.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the strength of an electromagnet change with current?
The strength of an electromagnet is unaffected by the type of current used.
The strength of an electromagnet increases with increasing current.
The strength of an electromagnet remains constant regardless of current.
The strength of an electromagnet decreases with increasing current.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What materials are commonly used in the core of an electromagnet?
Wood, glass, rubber
Lead, zinc, brass
Copper, aluminum, plastic
Iron, steel, ferrite
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Name one application of electromagnets in everyday life.
Refrigerators
Washing machines
Electric motors
Televisions
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