Electromagnets
Flashcard
•
Science
•
5th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an electromagnet?
Back
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It consists of a wire coil wrapped around a core material, usually iron.
2.
FLASHCARD QUESTION
Front
What happens to the core of an electromagnet when electricity flows through it?
Back
The core becomes a temporary magnet when electricity flows through the wire coil.
3.
FLASHCARD QUESTION
Front
What is the role of insulated wire in making an electromagnet?
Back
Insulated wire prevents short circuits and ensures that the electric current flows through the wire coil, enhancing the strength of the electromagnet.
4.
FLASHCARD QUESTION
Front
Why are some materials attracted to magnets?
Back
Materials like iron are attracted to magnets because they contain magnetic domains that align with the magnetic field.
5.
FLASHCARD QUESTION
Front
What is a magnet?
Back
A magnet is any material that can attract iron or materials containing iron.
6.
FLASHCARD QUESTION
Front
What happens when the south pole of one magnet approaches the south pole of another magnet?
Back
They repel each other.
7.
FLASHCARD QUESTION
Front
What is the difference between a permanent magnet and an electromagnet?
Back
A permanent magnet maintains its magnetic properties without the need for electricity, while an electromagnet requires an electric current to generate a magnetic field.
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