¿Qué son los electroimanes?

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Science, Engineering, Physics
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4th - 9th Grade
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the basic principle behind the creation of an electromagnet?
Using a battery without a wire
Heating a metal to a high temperature
Circulating an electric current through a coil of wire
Using a permanent magnet
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the power of an electromagnet be increased?
By reducing the electric current
By adding an iron or steel core
By decreasing the number of coils
By using a thicker wire
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key advantage of electromagnets over permanent magnets?
They do not require electricity
They can be turned on and off
They are cheaper to produce
They are always on
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which of the following applications are electromagnets NOT typically used?
Medical imaging
Storing data on hard drives
Scrap separation
Cooking food
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the combination of electricity and magnetism appealing in industry and science?
It is less expensive than other methods
It offers versatility and control
It is easy to understand
It is a new discovery
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