What is an electromagnet?
Electromagnetism Review

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Physics
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It typically consists of a coil of wire wound around a core material, which can be made of iron or another ferromagnetic material.
2.
FLASHCARD QUESTION
Front
How does increasing the number of coils affect an electromagnet's strength?
Back
Increasing the number of coils around an electromagnet increases its strength. More coils create a stronger magnetic field when an electric current passes through them.
3.
FLASHCARD QUESTION
Front
What is the energy transformation that occurs when a toy powered by electricity moves a marble up a slide?
Back
The energy transformation is from electrical energy to mechanical energy.
4.
FLASHCARD QUESTION
Front
What factors can be adjusted to make an electromagnet stronger?
Back
The strength of an electromagnet can be increased by increasing the number of coils, increasing the current flowing through the wire, or using a better core material.
5.
FLASHCARD QUESTION
Front
What happens to the strength of an electromagnet as the current increases?
Back
As the current increases, the strength of the electromagnet also increases.
6.
FLASHCARD QUESTION
Front
What is the relationship between electric current and magnetic strength in an electromagnet?
Back
The relationship is direct; as electric current increases, the magnetic strength of the electromagnet increases.
7.
FLASHCARD QUESTION
Front
What is the role of the core material in an electromagnet?
Back
The core material enhances the magnetic field produced by the coil of wire, making the electromagnet stronger.
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